Web Apps

String Case Converter

Convert any string to camelCase, snake_case, PascalCase, kebab-case, etc. Micro-utility for naming variables.

Markdown Table Generator

Excel-like grid UI to create, edit, and format Markdown tables easily. Fixes the worst part of writing Markdown.

CSS Gradient Animator

Generates the CSS for smoothly animated complex gradients with a real-time preview.

Bun vs Node Benchmark

Side-by-side Bun vs Node.js performance benchmark visualizer with interactive charts.

SQL Schema to Prisma Schema

Convert SQL CREATE TABLE definitions instantly into valid schema.prisma models.

Deno Permissions Explorer

Interactive, visual explorer for building Deno 2.0 permission profiles with CLI and deno.json export.

.env File Diff Tool

Compare two .env files side by side with color-coded diff and secret masking

A11y Contrast Matrix

Enter a color palette to see WCAG AA/AAA contrast ratios for all possible foreground/background pairs.

Accessibility AI Auditor

Scan HTML for accessibility issues with 10 heuristic WCAG checks. Get severity-coded results and actionable fix suggestions.

Accessibility Color Checker

Check color contrast ratios between foreground and background colors for WCAG AA and AAA compliance

Accessibility Color Palette

Generate entire color palettes that are WCAG AA/AAA compliant — pick a base color and get accessible text/background combinations with contrast ratios.

Accessibility Contrast Grid

Test every combination of foreground and background colors against WCAG 2.1 AA and AAA standards. Creates a visual matrix showing which color pairs pass or fail, helping designers build accessible col

Accessibility Keyboard Tester

Interactive tool to test keyboard-only navigation — paste HTML or enter a URL concept, visualize tab order, focus traps, and missing skip links.

Accessibility Report Gen

Generate WCAG accessibility audit reports from any URL with actionable fix suggestions.

Accessibility Role Play Sim

Experience your website as users with disabilities do. Simulate screen reader output, keyboard-only navigation, and various visual impairments.

Accessibility Statement Generator

Guided wizard to create WCAG 2.1/2.2 compliant accessibility statements with customizable sections, legal language, and export as HTML or PDF.

Adhd Focus Task Breaker

A neurodivergent-friendly task management tool that breaks overwhelming tasks into tiny, dopamine-rewarding micro-steps. Uses the "2-minute rule" and body-doubling timers to help ADHD brains start and

Agile Branch Name Generator

A utility to generate perfectly formatted `git branch` names from Jira titles or messy English sentences. Converts "We need to fix the login button on the checkout page" into `feature/fix-checkout-log

Agile Planning Poker

A local-first Planning Poker tool for agile teams to estimate story points together. Host a session from one browser, team members join via URL code, everyone votes simultaneously, and results reveal

AI Accessibility Alt Writer

Upload images and generate descriptive alt text suggestions optimized for screen readers

AI Agent Workflow Diagrammer

Diagram multi-agent workflows with nodes for tools, memory, and routing. Visual architecture tool for AI agent systems.

AI Alt Text Generator

Upload an image and generate accessible alt text descriptions. Uses client-side vision processing for privacy. Supports bulk processing.

AI API Doc Generator

Upload an OpenAPI spec and generate beautiful, human-readable API documentation with code examples.

AI API Error Helper

Paste an API error response and get an explanation plus common fixes

AI Architectural Reviewer

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AI Architecture Designer

Drag-and-drop cloud architecture diagram tool with 10 AWS components and auto-generated Terraform code.

AI Burnout Risk Meter

Track daily mood, energy, focus, and sleep patterns over time — visualize a burnout risk score with personalized recommendations and trend analysis, all stored locally.

AI Changelog Writer

Paste your raw git log or list of commit messages, and this tool transforms them into a beautiful, user-friendly changelog. Groups commits by type , writes human-readable descriptions, and exports as

AI Changelog Writer

Generate polished release notes and changelogs from git log history, organized by category.

AI Code Complexity Visualizer

Paste code and see cyclomatic complexity, nesting depth, and cognitive complexity visualized as an interactive treemap with hotspot highlighting.

AI Code Review Checklist

A web app that generates smart code review checklists based on the PR description and tech stack. Paste your diff or PR description and get a tailor-made review checklist covering security, performanc

AI Code To Flowchart

Paste code and get an auto-generated Mermaid flowchart of the control flow — supports if/else, loops, switch, try/catch

AI Color Mood Matcher

Describe a mood or feeling and get matching color palettes — 'cozy autumn evening' → warm palette

AI Color Namer

Enter hex or RGB color to get creative, semantic color names for design systems

AI Color Palette From Photo

Upload a photo and extract a harmonious design color palette using AI-powered color analysis.

AI Commit Composer

Generate conventional commit messages from staged git diffs using local AI. Paste your diff, get a perfectly formatted commit message.

AI Commit Explainer

Paste a git diff or commit and get a human-readable explanation of what changed and why. Uses local heuristics to analyze code changes, categorize modifications, and generate clear summaries for non-t

AI Commit Message

Paste a diff or changed files and get a conventional commit message suggestion.

AI Commit Message Coach

Paste your code diff or list of changed files, and get 5 perfect commit message suggestions following conventional commits format. Score your existing commit messages and learn to write better ones.

AI Commit Message Gen

Paste a git diff → get conventional commit messages using heuristic analysis. No API keys, no cloud — all processing happens locally in-browser.

AI Commit Message Writer

Generate conventional commit messages from diff text using local AI. Paste your git diff and get perfectly formatted commit messages.

AI Commit Reviewer

Paste a git diff and get an AI-powered review highlighting potential bugs, security issues, code smells, and improvement suggestions — all local.

AI Commit Summarizer

Paste git diff, get a formatted PR description using a small local LLM.

AI Commit Writer

Paste a git diff — get a conventional commit message with scope, type, body, and breaking change footer automatically generated.

AI Cron Explainer

Paste a cron expression and get plain English explanation, next 10 run times, visual schedule timeline, and reverse builder from description.

AI CSS To Prose

Paste CSS and get a plain English explanation of what each rule does

AI Database Query Explainer

Paste a complex SQL query and get a plain-English explanation of what it does — step by step, clause by clause

AI Decision Log

A structured decision journal app that helps teams record architectural and product decisions . Type the decision context and alternatives, and AI helps you write a clean Decision Record. Fully local

AI Email Tone Analyzer

Paste an email and get tone analysis — is it too formal? Too aggressive? Just right?

AI Error Explainer

Paste a stack trace to get plain-English explanation and likely fix suggestions

AI Git Diff Summarizer

Paste a git diff and get a human-readable summary of changes — grouped by file, with impact assessment

AI Hallucination Detector

Compare AI output against source text and highlight unsupported claims. A critical trust verification tool.

AI HTML To Markdown

Paste HTML and get clean, well-formatted Markdown with smart list and table conversion

AI Image Upscaler Local

Browser-based image upscaling using WebGPU and ONNX runtime — all processing happens locally.

AI Interview Coach

A browser-based interview practice tool. Users pick a role , difficulty level, and get AI-generated interview questions. They type answers and get instant feedback on clarity, completeness, and key po

AI Meeting Agenda

Paste previous meeting notes to get a structured agenda for the next meeting

AI Meeting Agenda Builder

Generate structured meeting agendas from loose topics with time estimates and action items.

AI Meeting Cost Calculator

Calculate the real-time cost of a meeting based on attendee salaries — with a ticking dollar counter.

AI Meeting Notes

A structured meeting notes app that helps you capture, organize, and share meeting outcomes. Type notes during a meeting and get AI-assisted action item extraction, decision summaries, and formatted m

AI Model Benchmark Viewer

An interactive, filterable comparison table of publicly available LLM benchmarks. See how GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, Llama 3, Mistral, and 15+ other models score on MMLU, HumanEval, MA

AI Model Context Window Calc

Calculate token usage across models with real-time cost estimate. Essential tool for every AI developer.

AI Model Cost Calculator

Compare costs of GPT-4o, Claude, Gemini, Llama, Mistral by token count with batch/streaming pricing and monthly budget estimation.

AI Model Size Calculator

Compare LLM model sizes, VRAM requirements, and quantization tradeoffs visually. Plan your hardware needs for running AI models locally.

AI Name Meaning Lookup

Look up the meaning, origin, and cultural significance of any name using local AI

AI Output Diff Checker

Side-by-side diff viewer to compare AI-generated code vs original source. Highlights changes, scores confidence, and flags risky modifications.

AI PR Description Writer

Paste a git diff and get a well-structured pull request description with summary, changes list, testing notes, and reviewer checklist — all generated locally.

AI Prompt Ab Tester

Compare two AI prompts side by side with output diff, scoring rubric, and prompt optimization suggestions — all running locally

AI Prompt Chain Builder

Visually build multi-step AI prompt chains with variable passing. No-code prompt engineering workflow builder.

AI Prompt Diff Viewer

Compare two prompt versions with token-level differences visualization and cost estimation. Track prompt iterations effectively.

AI Prompt Library

Curated library of AI prompts organized by category with search, favorites, and one-click copy. Build your personal prompt collection.

AI Prompt Optimizer

A dedicated local tool to format, optimize, and store complex system prompts for LLMs . Ensures perfect Markdown formatting, variable interpolation, and exact character counts.

AI Prompt Playground

Write, test, and compare AI prompts side-by-side. Save prompt templates, mock AI responses, and iterate on prompt engineering workflows — all locally.

AI Prompt Tester

A local-first AI prompt testing and comparison tool. Write prompts, define test cases , run them against multiple prompt variants, and compare results side by side. No API keys needed — paste your own

AI Prompt Version Control

Track, diff, and A/B test AI prompts across models with version history and performance metrics.

AI Proposal Generator

A freelancer-focused tool to generate professional project proposals in minutes. Fill in client name, project scope, timeline, and budget — get a beautifully formatted PDF proposal ready to send. Full

AI Readme Builder

Answer prompts about your project to get a polished README.md with badges, TOC, and sections

AI Regex Builder

Describe a pattern in English to get regex with explanation and auto-generated test cases

AI Regex Generator

Describe what you want to match in plain English and get a regex pattern with live test cases, step-by-step explanation, and copy-ready code.

AI Regex To Prose

Paste a regex pattern and get a clear, human-readable explanation of what it matches

AI Resume Tailor

Paste a job description, upload your resume, and get a tailored version optimized for the role.

AI Retrospective Board

A sprint retrospective board for agile teams. Members add sticky notes to Well / Improve / Action columns. AI groups similar themes, generates actionable summaries, and creates a PDF report. Works in

AI SQL Query Optimizer

Paste a SQL query and get optimization suggestions — missing indexes, N+1 detection, join order improvements, and estimated execution plan visualization.

AI Standup Bot

A local-first daily standup tracker powered by AI. Team members type their updates , and the app uses AI to summarize, detect blockers, and generate a formatted standup report. Zero cloud dependency f

AI System Prompt Library

Browse, fork, and rate community system prompts for LLMs. A curated collection of high-quality system prompts.

AI System Prompt Tester

A local tool for writing, testing, and comparing AI system prompts side-by-side. Developers can organize prompts into versioned sets, annotate what behavior each produces, and track which prompt versi

AI Tech Acronym Decoder

Paste text with tech acronyms and get inline expansions with brief explanations

AI Token Cost Splitter

Split prompts across models to minimize cost while maintaining quality. Novel cost-optimization for AI developers.

AI Training Data Labeler Local

Label images and text for ML training entirely in the browser. Local-first, privacy-respecting data labeling.

AI User Story Generator

Describe a feature and get well-formatted user stories with acceptance criteria

AI UX Copy Generator

Generate microcopy for UI elements — buttons, tooltips, error states, success messages, and empty states.

AI UX Microcopy Writer

Input UI context and get AI-generated microcopy suggestions with tone and length options.

AI Variable Namer

Struggling to name variables? Describe what it does in plain English, get back clean, conventional variable/function/class names in multiple languages and naming conventions.

AI Vibe Check Code Reviewer

Paste code and get a vibe score — readability, maintainability, joy. A fun take on code quality analysis.

Algorithm Race

Visualize sorting and pathfinding algorithms racing against each other in real-time.

Algorithm Visualizer Game

Gamified algorithm visualization — predict the next step of sorting/searching algorithms to score points.

Ambient Sound Mixer

A browser-based ambient sound mixer that lets users blend nature and focus sounds using the Web Audio API. Perfect for focus sessions, sleep, or relaxation — runs entirely offline with zero API keys.

Analog Clock

Beautiful analog clock with smooth sweeping second hand, multiple face styles, and world time zones. Rendered on Canvas with anti-aliased vectors. Features alarm and timer functionality.

Anchor Positioning Playground

Experiment with CSS Anchor Positioning for tooltips and popovers. Interactive sandbox for the brand-new CSS spec.

Angkot Route Planner

Indonesian public transportation route planner for angkot , TransJakarta, KRL, and MRT/LRT routes. Find the best route combining multiple transport modes with estimated fare and travel time.

Animated Gradient Generator

A tool for creating beautiful animated CSS gradients. Pick colors, set animation speed and direction, and export the CSS for your website backgrounds.

Animation Curves Library

Browse 100+ named easing curves with live preview, CSS cubic-bezier output, and comparison mode.

Animation Easing Curve Editor

Draw custom cubic-bezier easing curves with a visual editor. Preview the animation in real-time and copy the CSS cubic-bezier value.

Animation Easing Explorer

Interactive explorer for 40+ easing functions with live animation preview, cubic-bezier curve editor, and copy-paste CSS/JS code output.

Animation Easing Previewer

Preview all CSS easing functions with custom cubic-bezier editor and side-by-side comparison.

Animation Easing Studio

Visual cubic-bezier and spring animation curve editor with real-time preview.

Animation Timeline

Visual keyframe animation editor with CSS output and live preview.

Animation Timeline Editor

Visual CSS/JS animation timeline editor — keyframes, easing, and live preview.

Animation Timing Editor

Visual editor for CSS animation timing functions including cubic-bezier curves, spring physics, and step functions.

Ansible Playbook Linter

Paste Ansible playbook YAML and get linting feedback with best practice suggestions and deprecated module warnings

API Changelog Diff

Compare two OpenAPI/Swagger specs side-by-side and generate a human-readable changelog of breaking and non-breaking changes

API Changelog Differ

Compare two OpenAPI/Swagger specification files and generate a visual diff highlighting breaking changes, new endpoints, deprecated fields, and schema modifications.

API Changelog Gen

Paste two OpenAPI specs to get a visual changelog of breaking and non-breaking changes

API Changelog Generator

Compare two OpenAPI specs and generate human-readable changelog with breaking change detection.

API Contract Diff

Upload two OpenAPI/Swagger specs and instantly see a visual diff — breaking changes highlighted in red, new endpoints in green, deprecated fields in amber. Essential for API versioning.

API Contract Registry

Central registry for OpenAPI/Swagger specs.

API Contract Studio

A visual OpenAPI 3.0 contract editor and mock server generator. Define your API endpoints visually, generate OpenAPI YAML, and export a mock server config. Perfect for API-first development teams.

API Cost Calculator

Track and estimate OpenAI, Claude, Gemini API costs across projects.

API Documentation

Generate beautiful API docs from OpenAPI specs. Built with Next.js 15.

API Endpoint Mocker Visual

Visually design mock API endpoints with response templates, status codes, delays, and test them live.

API Endpoint Tetris

Tetris but the falling blocks are REST API endpoints that you must route to the correct HTTP method rows.

API Error Code Reference

Interactive reference for HTTP status codes and common API error patterns. Search by code number, category, or description.

API Header Builder

Visual builder for HTTP request headers with presets for common APIs . Export as cURL, fetch, or axios.

API Latency Dashboard

Real-time multi-endpoint latency monitor with P50/P95/P99 percentile charts. Paste API URLs and get live performance graphs.

API Latency Simulator

Test frontend resilience against artificially delayed API responses with configurable latency profiles.

API Mock Designer

A browser-based mock API server designer. Define routes, configure responses, and test your frontend against realistic mock data — all in-browser with a Service Worker interceptor.

API Mock Response Builder

Design and export mock API responses — define JSON schemas, generate realistic sample data, and create mock endpoints for frontend development.

API Mock Server

Define mock API endpoints in the browser and get a live URL for frontend development.

API Mock Server Browser

Create mock REST API endpoints in browser for prototyping.

API Mock Server Builder

Design mock REST APIs visually with latency simulation, random failures, and exportable OpenAPI specs.

API Mock Server Local

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API Mock Service Worker

Developer utility that uses Service Workers to intercept and mock HTTP requests for frontend testing. Define mock endpoints with custom responses, delays, and status codes. No server needed.

API Mocker Visual

Design mock REST APIs visually, configure fake data responses, and get shareable URLs. Frontend development without waiting for the backend.

API Payload Diff

Compare two API JSON responses side-by-side with semantic diffing — path highlighting, type changes, added/removed keys, and change summary.

API Payload Size Estimator

A development tool to estimate the exact byte size of JSON payloads before building an API, helping architects plan bandwidth costs and latency.

API Rate Limit Calculator

Calculate optimal API call strategies given rate limits. Plan polling intervals, batch sizes, and concurrent request limits.

API Rate Limit Planner

Plan and visualize API rate limiting strategies before implementing them. Model token bucket, sliding window, and fixed window algorithms with interactive simulations showing how traffic bursts affect

API Rate Limit Simulator

A web-based playground for frontend developers to write, test, and tune client-side API polling logic against a simulated rate-limited backend.

API Rate Limit Simulator

Simulate and visualize rate limiting algorithms with animated request flow

API Rate Limit Tester

Test API rate limits by sending configurable bursts of requests and visualizing the response pattern.

API Rate Limit Visualizer

Paste an OpenAPI spec and see rate limit budgets as visual gauges with alerts. Plan your API consumption without hitting walls.

API Rate Limit Visualizer

Configure rate limiting rules and visualize how they throttle traffic with animated request simulations.

API Request Builder

Visual REST and GraphQL request builder with auth, headers, body editor, and response viewer. Lightweight Postman alternative.

API Response Benchmark

Benchmark your API endpoints by running repeated requests and measuring response times. Get p50, p95, p99 percentiles, error rates, and compare between endpoints. Like Apache Bench in a browser UI.

API Response Comparator

Paste two JSON API responses and see a field-by-field diff with types, values, additions, and removals highlighted. Essential for comparing API versions.

API Response Diff

Compare two API responses side-by-side with intelligent diff highlighting.

API Response Faker

Configurable mock API returning realistic fake data. Define schemas, set latency, error rates — better than jsonplaceholder for frontend prototyping.

API Response Mocker

Create mock API endpoints with custom JSON responses, status codes, and delay simulation.

API Response Mocker

A local tool to create mock API responses for frontend development. Define endpoints, set status codes, delays, and response bodies — share via URL.

API Response Time Heatmap

Paste endpoint URLs, run timed fetch requests, and visualize latency as a color-coded heatmap over time.

API Response Time Simulator

Simulate API response times with delays, jitter, and errors — test client-side retry logic

API Schema Diff Tool

Compare two JSON schemas side-by-side — find new, removed, and changed fields

API Status Dashboard

Monitor multiple API endpoints — uptime, latency, status history charts. A self-hosted, privacy-first status page for small teams.

API Status Dashboard

Monitor the health of multiple API endpoints from your browser. Define endpoints, set check intervals, and see uptime history with response times — all stored locally.

API Status Defense

Tower defense game themed around HTTP status codes — each tower represents a status code that blocks specific types of requests

API Versioning Visualizer

Compare API versions side-by-side — see breaking changes, deprecations, and new endpoints

API Waterfall Visualizer

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App Icon Safe Zone Viewer

A web-based visual testing tool for mobile app developers to upload their app icon artwork and see how it will be aggressively masked by iOS and Android . Ensures critical logo elements aren't cut o

Appliance Manual Vault

Store, organize, and search appliance manuals, specs, and service history in one place.

Ar Indoor Navigator

Indoor navigation tool using device motion sensors and geolocation to help users navigate large indoor spaces. Provides step-by-step directions with a compass overlay.

Architecture Decision Log

ADR manager with status tracking, templates, and export.

Architecture Diagram Tool

Draw cloud architecture diagrams with drag-and-drop icons for AWS, GCP, and Azure — export as PNG or SVG.

Aria Role Explorer

Interactive ARIA roles and attributes reference with usage examples and screen reader behavior demos

ARIA Role Explorer

Interactive ARIA roles and attributes reference with live DOM preview

Ascii Art Converter

A tool that converts images to ASCII art. Upload a photo and see it rendered as characters with adjustable detail, characters, and frame size.

Ascii Art Generator

Convert text to ASCII art with multiple font styles.

Ascii Art Generator

Convert text into ASCII art using multiple font styles. Also converts images to ASCII art. Live preview with copy functionality.

Ascii Art Generator Pro

Convert text or images to ASCII art. Choose from multiple ASCII character sets, control density and size, and export as plain text or styled HTML. Works entirely in-browser.

Ascii Art Studio

Convert images to ASCII art with adjustable resolution, multiple character sets, colored HTML output, and export to text or image formats.

Ascii Art Text Generator

Convert text into stylish ASCII art banners using multiple font styles. Perfect for CLI headers and README files.

Ascii Flow Animator

An interactive ASCII art animation creator and player. Build ASCII diagrams frame by frame, set frame delays, and export as animated GIF or as a self-playing HTML file. Perfect for terminal animations

Ascii Flow Diagram

Draw flowcharts and diagrams that export as ASCII art for README files.

ASCII Flowchart Maker

Draw flowcharts visually then export as ASCII art for READMEs and terminal displays

Ascii Table Formatter

Paste CSV, JSON, or tab-separated data to generate perfectly aligned ASCII tables, Markdown tables, or HTML tables with style customization.

Ascii Table Generator

Create ASCII/Unicode box-drawing tables from data with multiple border styles and alignment options

Ascii Table Lookup

Reference table for ASCII codes.

Asn1 Decoder

Decode ASN.1 DER/BER encoded data into a human-readable tree with OID lookup

Asn1 To JSON Converter

Decode ASN.1 DER/BER encoded data to human-readable JSON tree structure

Aspect Ratio Calculator

Calculate aspect ratios, resize dimensions, and compare common ratios for responsive design.

Aspect Ratio Tool

Calculate and visualize aspect ratios. Built with Next.js 15.

Ast Explorer Lite

Paste JS/TS/Python code and see the AST as an interactive tree with syntax highlighting linked to tree nodes.

Asteroid Dodge

A fast-paced arcade game where you pilot a spaceship and dodge incoming asteroids. Features smooth canvas animation, particle effects, and escalating difficulty.

Audio Spectrum Analyzer

Real-time microphone audio spectrum analyzer using Web Audio API. FFT visualization in canvas with waveform, frequency bars, and spectrogram views.

Audio Visualizer

Real-time audio visualizer with multiple modes — frequency bars, waveform, circular, and particle-based.

Audio Waveform Viewer

Upload audio files to visualize waveforms, trim clips, and export segments. Perfect for podcasters and content creators.

Audio Waveform Visualizer

Upload audio files to visualize waveforms and spectrograms. Supports MP3, WAV, OGG with zoom, scrub, and export as PNG.

Audit Log Viewer Central

Centralized viewer for disparate system audit logs.

Avif Quality Comparer

Side-by-side AVIF vs WebP vs JPEG quality comparison at different compression levels with file size

Awk Command Builder

Build AWK one-liners visually with field selector, pattern matcher, and action builder with live output preview

Aws Arn Parser

Parse and construct AWS ARN strings with visual breakdown of partition, service, region, account, and resource

Aws Finops Visualizer

Visualize AWS cost anomalies and usage patterns for specific services.

Baby Name Explorer

Explore baby names with origin, meaning, popularity trends, and name compatibility

Bahasa Indonesia Nlp Playground

Tokenizer, stemmer, and NER playground for Bahasa Indonesia text processing.

Bahasa Lorem Generator

Generate placeholder text in Bahasa Indonesia — realistic paragraphs, sentences, and words for Indonesian web projects

Barcode Generator Local

Generate standard barcodes .

Barcode Price Tracker

Scan product barcodes via device camera to look up and track prices. Uses the Barcode Detection API for native barcode reading and stores price history locally.

Barcode Scanner Web API

Scan barcodes and QR codes using the Barcode Detection API. Works offline with no app install needed.

Base Converter

Convert numbers between bases . Built with Next.js 15.

Base Converter Extended

Convert numbers between bases 2-36 with step-by-step calculation breakdown and visual place value display

Base64 Encode Decode

Encode and decode Base64 strings and files.

Base64 Encoder

Encode and decode Base64 strings, files, and images. Supports text, binary files, and image preview — all client-side.

Base64 File Encoder

A fully local web utility to drag and drop images, fonts, or SVGs, and instantly convert them into Base64 Data URI strings for embedding directly into HTML or CSS.

Base64 Image Converter

Convert images to Base64 strings and vice versa. Optimize images before encoding to save size.

Base64 Image Encoder

The base64-image-encoder is a web application that allows users to drag and drop images to convert them into optimized Base64 data URIs. This is particularly useful for web developers looking to inlin

Base64 Image Encoder/Decoder

Drag-drop images to get Base64 in 4 formats, or paste Base64 to preview and download images. MIME auto-detection.

Base64 Swiss Army Knife

Encode/decode Base64, Base32, hex, URL encoding with file upload support.

Bash Script Explainer

Paste a bash script and get a line-by-line plain English explanation with syntax highlighting and danger warnings.

Batch Image Watermarker

Add watermarks to multiple images at once — text or image overlays with position, opacity, and size controls. Process everything locally in the browser. Perfect for photographers and content creators

Batik Pattern Generator

Generate procedural batik patterns inspired by Indonesian traditional motifs. Create parang, kawung, mega mendung, and other patterns with customizable colors, scale, and complexity. Export as SVG or

Battery Status API

View detailed battery level and charging status.

Bcrypt Hash Generator/Verifier

Generate bcrypt hashes and verify passwords locally in the browser with configurable cost factor.

Bezier Curve Playground

Interactive cubic bezier curve editor for CSS animations. Drag control points, see live preview, copy CSS timing function.

Bezier Curve Workshop

Draw, manipulate, and chain Bézier curves with control point handles. Generate CSS, SVG, and Canvas code in real-time.

Bibtex Formatter

Format, validate, and sort BibTeX bibliography entries for academic papers

Big O Visualizer

Animate algorithm complexity curves with real code examples and input-size sliders.

Bill Splitting Tool

Smart bill splitter with tip calculator, uneven splits, and payment link integration

Binary Converter

Convert between binary, hexadecimal, decimal, and octal

Binary Math Blitz

Rapid binary-to-decimal, decimal-to-binary conversion challenges with combos, power-ups, and time pressure.

Binary Text Translator

Translate text to binary and vice versa.

Binary Tree Visualizer Interactive

Build and visualize binary trees interactively. Insert, delete, search nodes and watch the tree rebalance. Supports BST, AVL, Red-Black trees with step-by-step operation animation.

Binary Tree Viz

An interactive binary search tree visualization tool. Users insert, delete, and search nodes while watching smooth step-by-step animations of BST operations. BFS and DFS traversal animations are incl

Bio Generator

Generate optimized social media bios for different platforms from a single input profile.

Biome Config Generator

Visual Biome.js configuration builder with live lint/format preview

Bip39 Mnemonic Gen

Generate BIP39 mnemonic phrases .

Birthday Reminder Dashboard

Track birthdays with countdown timers, age calculations, and gift idea suggestions.

Blog Cms

Headless blog CMS with markdown editor and API. Built with Next.js 15.

Blog Outline Generator

Input a topic and get a structured blog outline with headings, key points, and word count targets.

Blog Post Outline Gen

Enter a topic → get a structured blog post outline with H2 headings, key points, word count targets, and SEO keyword suggestions.

Blog Post Outline Generator

Generate structured blog post outlines from a topic — headings, subpoints, CTA sections.

Blood Test Visualizer

Upload blood test results and visualize results with beautiful charts, reference ranges, trends over time, and health insights. All data stays local.

Bluetooth Heart Rate Monitor

Dashboard that connects to BLE heart rate monitors and fitness trackers via Web Bluetooth API. Visualizes real-time heart rate, tracks zones, and logs workout sessions.

Bmi Body Fat Estimator

An elegant health calculator that computes BMI, estimated body fat percentage , lean mass, and fat mass. Features an illustrated body silhouette that changes color/shape based on body composition, and

Body Measurement Tracker

A local-first fitness progress tracker for body measurements. Log chest, waist, hips, arms, thighs, and weight over time, and see smooth trend charts for each measurement. Compare current vs starting

Body Metrics Calculator

A comprehensive, offline body metrics calculator that goes far beyond BMI. Calculate BMI, BMR, TDEE, ideal weight range, body fat percentage estimate, and macronutrient targets — all with beautiful vi

Boid Simulation

A beautiful, interactive Boid simulation. Watch hundreds of autonomous agents exhibit emergent flocking behavior. Adjust parameters in real-time to see how alignment, cohesion, and separation affect

Bookmark Manager

Organize, tag, and search your bookmarks with previews. Built with Next.js 15.

Bookmarks Manager

A web-based bookmark manager with tags, folders, and search.

Border Radius Generator

Visual border-radius editor with individual corners. Built with Next.js 15.

Box Shadow & Gradients CSS Generator

Advanced CSS generator for neumorphic and glassmorphic UI elements

Box Shadow Generator

Visual CSS box-shadow creator with layered shadows

Box Shadow Generator CSS

Visual sliders to layer multiple CSS box shadows for smooth, modern depth.

Box Shadow Studio

Create complex multi-layer CSS box shadows with visual controls and live preview.

Bpjs Calculator

Indonesian BPJS Kesehatan and Ketenagakerjaan contribution calculator — compute employer and employee shares by salary bracket.

Bpjs Calculator Indonesia

Calculate BPJS Kesehatan and BPJS Ketenagakerjaan contributions based on your salary. Shows both employee and employer portions with monthly and yearly totals.

Brand Color Accessibility Checker

Check brand colors against WCAG accessibility standards at all contrast levels.

Breakpoint Debugger Visual

Visualize CSS breakpoints across your responsive design. Shows active breakpoints, media queries, and container queries.

Breathing Exercise Tool

Visual guided breathing aid .

Brotli Gzip Comparer

Paste text content to compare compression ratios between Brotli and Gzip with size reduction percentages

Browser API Explorer

Interactive reference for 100+ Web APIs with live demos you can run in your browser. See which APIs your browser supports and try them instantly.

Browser Event Key Logger

A highly technical diagnostics tool used when debugging complex keyboard navigation, gaming inputs, or accessibility issues. It logs raw DOM `KeyboardEvent` data to a running terminal interface in the

Browser Feature Detector

Detect and display all supported browser APIs, CSS features, and ES standards in current browser.

Browser Fingerprint Analyzer

Show your browser fingerprint and how unique/trackable you are. An eye-opening privacy awareness tool.

Browser Fingerprint Tester

See exactly what your browser reveals about you — canvas, WebGL, audio, fonts, and more

Browser Fingerprint Viewer

A privacy education tool that visually breaks down exactly what information a user's browser is leaking to websites, calculating a uniqueness score based on screen resolution, canvas fingerprinting, f

Browser Fingerprint Viewer

Shows your browser's unique fingerprint score with detailed breakdown of canvas, WebGL, fonts, and plugins contributing to it.

Browser Privacy Score

Instantly analyze browser fingerprint uniqueness and tracking exposure with privacy recommendations.

Browser Storage Inspector

Inspect, edit, and manage all browser storage in one place — LocalStorage, SessionStorage, IndexedDB, Cookies, and Cache API with a unified table view.

Browser Storage Quota

Check available storage quota.

Browser Storage Quota Dashboard

Real-time dashboard showing localStorage, sessionStorage, IndexedDB, Cache API, and cookie usage with quota limits and cleanup tools.

Browser Storage Visualizer

Visualize and manage localStorage, sessionStorage, cookies, and IndexedDB usage

Browser Video Editor

Client-side video trimmer and transcoder using the WebCodecs API. Trim, crop, and re-encode videos entirely in the browser — files never leave the device. Supports MP4, WebM output.

Bruno Collection Converter

Convert Postman and Insomnia API collections to Bruno `.bru` format. Drag-and-drop JSON import with instant conversion and download.

Bubble Pop Puzzle

A satisfying bubble popping puzzle game. Tap clusters of same-colored bubbles to pop them and clear the board. More bubbles in a cluster = higher score.

Budget Envelope Planner

A digital implementation of the envelope budgeting method. Allocate your monthly income into named "envelopes" at the start of the month, then log spending against each. See vivid visual feedback as

Budget Forecaster

```markdown

Budget Planner

Monthly budget planning with categories and tracking. Built with Next.js 15.

Bullet Time Arena

FPS where time only moves when you move. Dodge bullets Matrix-style across 30 tactical levels.

Bun Lockfile Analyzer

Upload a bun.lockb and see dependency tree, duplicates, license audit, and size breakdown

Bun Vs Node Benchmark

Side-by-side benchmark comparison tool for Bun vs Node.js. Interactive charts showing performance differences across common operations.

Bundle Size Analyzer

Upload a JavaScript bundle — get an interactive treemap showing what takes space with size-reduction suggestions per module.

Bundle Size Treemap

Upload a JavaScript bundle or source map to visualize every module's size as an interactive treemap with optimization suggestions.

Bundle Treemap

Upload webpack/vite stats to get interactive treemap showing bundle size breakdown

Business Name Generator

AI-powered business name suggestions with domain availability checking and branding ideas.

Cache Buster Universal

One-click tool to generate cache-busting URLs, manifests, and deployment scripts. Supports query strings, filename hashing, ETags, and CDN purge configs.

Cache Header Playground

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Cache Nuke Button

One-click tool to clear browser caches, service workers, IndexedDB, cookies, localStorage, and sessionStorage. The nuclear option for developers tired of stale data.

Cache Nuke Dashboard

One-click visual tool to clear all browser caches with a unified dashboard showing storage usage and per-category breakdowns.

Calculator

A beautiful, functional calculator app. Vanilla HTML/CSS/JS, no dependencies.

Calorie Macro Calculator

A beautiful, local-first daily calorie and macronutrient tracker. Users set calorie goals, log meals with macros , and see animated ring progress charts for each nutrient. All data persists in localSt

Capacity Planning Tool

Forecast infrastructure capacity needs.

Carbon Emission API Calculator

Calculate carbon emissions from API calls based on server location. Novel sustainability tool for developers.

Carbon Footprint Calculator

Calculate personal carbon footprint from daily habits with actionable reduction tips and visual charts.

Carbon Footprint Dev Calculator

Calculate the environmental impact of your software stack. Estimates carbon emissions from cloud services, CI/CD pipelines, data transfer, and development practices. Visualizes your project's carbon c

Carbon Footprint Estimator

Estimate the digital carbon footprint of a webpage — analyze page weight, hosting energy, data transfer, and CDN impact. Raise eco-awareness for web developers.

Carbon Footprint Website Calc

Estimate a website's carbon footprint based on page weight, server location, hosting type, and monthly traffic — with green hosting recommendations.

Case Converter Pro

Convert text between camelCase, snake_case, kebab-case, PascalCase, etc.

Cdn Performance Tester

Test CDN response times from multiple simulated global locations and visualize latency.

Cel Expression Tester

Write and test Common Expression Language expressions against JSON data with type checking

Cellular Automata Explorer

An interactive cellular automata explorer. Run Conway's Game of Life, Rule 110, and custom automata rules. Draw initial states, run simulations, and observe emergent patterns.

Certificate Request Generator

Generate Certificate Signing Requests with key pair generation, field guidance, and PEM output — all client-side

Certificate Transparency Viewer

Search Certificate Transparency logs for any domain — find all issued certificates

Changelog App

Beautiful public changelog for products with categorized entries and email notifications

Changelog Diff Viewer

Compare package changelogs between versions with visual diffs and breaking change highlights.

Changelog Generator

Paste git commit messages, auto-categorize them by type , and generate a beautifully formatted changelog.

Changelog Generator

Paste git log output or connect to a repo to generate a formatted changelog following the Keep a Changelog specification.

Changelog Generator AI

Paste git log output and get a beautifully formatted changelog grouped by type .

Changelog Generator Local

Generate changelogs from conventional commits or manual entries.

Changelog Generator Web

Generate CHANGELOG.md files from conventional commits with version grouping and breaking change highlighting

Changelog Semantic Parser

Parse and render Keep a Changelog format files with filtering, search, and version comparison capabilities.

Changelog Viewer

Paste a CHANGELOG.md file and get a beautifully rendered, searchable view with filtering by version, change type, and date range.

Changelog Widget

Generate embeddable changelog widgets for websites. Create beautiful release notes with versioning and categories.

Chaos Engineering Dashboard

A visual experiment planner and simulator for chaos engineering practices. Design fault injection scenarios, define blast radius, set steady-state hypotheses, and run simulated chaos experiments again

Character Count Analyzer

Advanced text analysis — character, word, sentence, paragraph counts with readability scores and keyword density

Character Counter

Count characters, words, sentences with limits. Built with Next.js 15.

Chart Race Animator

Create animated bar chart races from time-series data — like those viral YouTube videos

Chemical Equation Balancer

Input an unbalanced chemical equation and get the balanced equation with step-by-step algebraic balancing shown. Supports common inorganic and organic compounds with a built-in element parser.

Chmod Calculator

Interactive Unix file permissions calculator. Toggle read/write/execute visually and get the numeric chmod value.

Chmod Calculator GUI

Visual permissions text to octal calculator.

Chmod Calculator Visual

Visual Unix permissions calculator. Toggle read/write/execute for user/group/other and see the numeric and symbolic representations.

Chmod Permissions Calculator

A hyper-fast educational utility for translating Linux file permissions to their visual representations and vice versa. Explains exactly what each bit means for an Owner, Group, and Public user.

Ci Build Time Analyzer

Analyze CI pipeline duration and bottlenecks.

Ci Cd Pipeline Visualizer

Paste GitHub Actions or GitLab CI YAML and see the pipeline as interactive flowchart with timing.

Ci Pipeline Visualizer

Paste GitHub Actions, GitLab CI, or CircleCI YAML and see a visual pipeline diagram

Cicd Pipeline Visualizer

Paste GitHub Actions or GitLab CI YAML and get a visual flowchart of the pipeline stages.

Cidr Overlap Checker

Check if multiple CIDR ranges overlap with visual Venn diagram and conflict highlighting

Cidr Subnet Visualizer

Visualize CIDR notation with subnet masks, IP ranges, host counts, and visual address space map

Circuit Breaker Visualizer

An interactive simulator for the circuit breaker resilience pattern used in distributed systems. Visualize state transitions in real-time as you send simulated requests with configurable failure rate

Cli Command Cheatsheet

Interactive cheatsheet for common terminal commands: git, docker, npm, kubectl, brew. Search, filter, and copy.

Cli Flag Builder

Build complex CLI commands visually — select flags, add arguments, preview the full command

Clip Path Editor

Visual CSS clip-path polygon editor. Built with Next.js 15.

Clipboard History Local

Simple clipboard logger .

Clipboard History Web

Browser-based clipboard manager using localStorage. Search, pin, tag, and manage your clipboard history privately.

Clipboard Sanitizer

Paste URLs and text to strip tracking parameters with clean output.

Cloud Access Request System

Just-in-time access requests for cloud resources.

Cloud Cost Calculator

Compare AWS, GCP, and Azure costs for identical workloads side-by-side.

Cloudflare Worker Tester

Test Cloudflare Worker scripts locally in the browser with request simulation and response inspection

Cname Flattening Checker

Check if a domain supports CNAME flattening at the apex with DNS resolution chain visualization

Cocktail Ratio Calculator

A sleek cocktail recipe builder and batch scaler. Users select or create cocktail recipes by ratio , and the tool calculates exact volumes for any number of servings. Includes a curated library of 60+

Code Diff Viewer

Side-by-side and inline code diff viewer with syntax highlighting. Paste two code blocks and see changes instantly.

Code Explanation Generator

```markdown

Code Golf Arena

Solve coding challenges in the fewest characters — leaderboard by language, code comparison, and competitive programming in the browser.

Code Knowledge Graph

Interactive visualization of codebase structure as a knowledge graph. Paste a repo structure or code and see functions, classes, and imports as connected nodes.

Code Screenshot Generator

Create beautiful code screenshots with syntax highlighting, custom backgrounds, and padding. Like Carbon but local.

Code Smell Detector

A browser-based code quality analyzer that detects common code smells across JavaScript, TypeScript, Python, and Go. Paste code and get flagged issues: long functions, deep nesting, magic numbers, dea

Code Snippet Imagemaker

A web tool that takes plain text code and transforms it into beautiful, shareable images with customizable syntax themes, window frames, backgrounds, and drop shadows—similar to Carbon or Rayso. Desig

Code Snippet Manager Pro

The code-snippet-manager-pro is a web application designed for developers to efficiently manage their code snippets. It allows users to tag snippets for easy retrieval and provides syntax highlighting

Code Snippet Share

Create beautiful code snippet images with syntax highlighting, custom themes, and social media export. Carbon.sh alternative.

Code Snippet Vault

A local-first, zero-dependency code snippet manager that lets developers save, tag, search, and copy frequently-used code snippets with full syntax highlighting. Think of it as a personal Gist — offli

Code Type Racer

Typing speed game using real code snippets from popular repos. Race against your personal best or AI.

Code Typing Race

Type real code snippets as fast as possible. Race against the clock or other players in multiplayer.

Codebase Complexity Analyzer

Upload source files and get cyclomatic complexity, code smells, and tech debt score.

Codebase Health Scorer

A developer tool where you describe your codebase or paste directory structure + key metrics and get a scored "technical debt health report" with prioritized recommendations — all client-side.

Codebase Stats Dashboard

Paste a GitHub repo URL or upload a ZIP — see language breakdown, file size heatmap, complexity scores, and tech debt estimates.

Codeblock Beautifier

Format and beautify code snippets with themes. Built with Next.js 15.

Codeowners File Builder

Visual builder for GitHub CODEOWNERS files — map directories to team members with pattern validation and coverage visualization

Codepoint Explorer

Explore Unicode characters by block, name, or codepoint range with copy and search functionality.

Coding Quiz Game

A fun quiz game for learning developer concepts. Choose a topic, answer multiple-choice questions with timed rounds, earn XP, and compete with yourself on a personal leaderboard.

Coffee Brew Ratio Calculator

The ultimate specialty coffee brewing assistant. Enter your dose and target brew weight, and instantly get the exact water amount, ratio, and pour schedule for any brew method . Includes a built-in br

Coffee Brewing Calculator

Calculate precise coffee brewing ratios for every method — pour over, French press, espresso, cold brew, AeroPress, and more. Adjust for bean strength, grind size, water temperature, and brew time.

Coin Flipper Sim

Flip a coin with animation.

Color Accessibility Checker

Check any foreground/background color pair for WCAG AA and AAA compliance. Suggests accessible alternatives for failing combos.

Color Blindness Design Checker

Upload a screenshot or paste colors and see how your design looks under 8 types of color vision deficiency — with contrast fix suggestions and WCAG compliance check.

Color Blindness Filter Preview

Upload any image or screenshot and preview how it looks under all 8 types of color vision deficiency. Essential tool for accessibility testing of designs and UIs.

Color Blindness Sim

Upload screenshots or enter colors — simulate how they look under all 8 types of color vision deficiency with side-by-side comparison.

Color Blindness Simulator

Upload an image or enter a URL to simulate how it appears to people with 8 types of color vision deficiency.

Color Blindness Simulator Live

Upload a screenshot or paste a URL and see how it looks to users with different types of color blindness — deuteranopia, protanopia, tritanopia

Color Blindness Simulator Tool

Upload images or enter colors to simulate how they appear with different types of color blindness

Color Contrast Accessibility Fixer

Find the closest WCAG AAA-compliant color pair. 6 fix strategies with live preview and one-click apply.

Color Contrast Analyzer

WCAG accessibility checker with suggestions for passing ratios.

Color Contrast Checker

Check WCAG color contrast ratios between text and background colors. Real-time preview with accessibility compliance indicators.

Color Contrast Checker Wcag

Check foreground/background color contrast ratios against WCAG 2.1 AA and AAA standards with suggestions.

Color Contrast Grid

Generate a full contrast ratio grid for your design system's color palette. WCAG compliance made visual.

Color Contrast Grid Matrix

Generate a full NxN contrast ratio matrix for your entire color palette. Every color is checked against every other color for WCAG AA and AAA compliance — instantly revealing which pairings are access

Color Contrast Matrix

Input a color palette and generate a full accessibility contrast matrix for every combination.

Color Format Converter

A hyper-fast, offline-capable color conversion tool built specifically for modern UI design, quickly generating identical color arrays in standard Hex, RGB, styling-friendly HSL, and new OKLCH spaces.

Color From Image

Upload any image and extract the dominant color palette with hex, RGB, and HSL codes. Perfect for designers and developers.

Color Harmonizer

Generate harmonious color palettes using color theory rules .

Color Harmony Wheel

Interactive color wheel showing complementary, analogous, triadic, and split-complementary harmonies.

Color Mixer

Mix and blend colors with harmony suggestions. Built with Next.js 15.

Color Name Finder

Find the closest named color for any hex value. Built with Next.js 15.

Color Palette Accessibility

Check an entire color palette for WCAG contrast compliance — every pair tested with pass/fail matrix

Color Palette Accessibility Checker

Test foreground/background color combinations for WCAG AA and AAA compliance with live preview and palette builder.

Color Palette Accessibility Grader

Upload or build a color palette, test every combination for WCAG AA/AAA contrast ratios, and get auto fix suggestions.

Color Palette Extractor

Upload an image and extract dominant colors as CSS variables, hex codes, and Tailwind swatches.

Color Palette From Image

A tool that extracts dominant colors from any uploaded image. Get a beautiful palette with HEX codes, color names, and export options for design tools.

Color Palette From Photo

Extract beautiful color palettes from any photo. Upload an image and get the dominant colors, complementary palettes, and export as CSS variables, Tailwind config, or design tokens. Perfect for design

Color Palette From Screenshot

Upload any image or screenshot and extract a harmonious 5-8 color palette using k-means clustering. Copy colors as HEX, RGB, or HSL.

Color Palette Generator

Generate harmonious color palettes — complementary, triadic, analogous. Export as CSS vars or Tailwind config.

Color Palette Generator AI

AI-assisted color palette generator. Lock specific colors and generate harmonious matches.

Color Scale Generator

Generate 10-step color scales from any base color. Preview in UI components. Export as CSS variables or design tokens.

Color Space Converter

Convert colors between 10+ color spaces with visual comparison

Color System Generator

Generate a complete design system color palette from a single brand color

Color Theory Teacher

An interactive, visual guide to color theory fundamentals. Learn complementary, analogous, triadic, and split-complementary color schemes through hands-on color wheels, sliders, and real-time example

Color Token Generator

Define a base color and auto-generate a full design token scale with accessible contrast pairs. Export as CSS custom properties or Tailwind config.

Color Token System Builder

Generate a complete design system color scale from a single brand color with accessibility-aware contrast ratios

Commission Calculator

Sales commission calculator with tiered rates, quota tracking, and team-level reporting.

Commit Art Generator

Design pixel art that renders as GitHub contribution graph art

Commit History Heatmap

Visualize your git commit history as a beautiful heatmap. Paste git log output and see your coding patterns — busiest hours, most productive days, weekly patterns over months.

Commit Lint Checker

A browser-based commit message linter that validates messages against Conventional Commits, Angular, and custom rules. Paste a commit message and get instant feedback with suggestions for improvement.

Commit Message Crafter

Craft perfect conventional commit messages with interactive prompts, scope suggestions, and breaking change flags.

Commit Message Generator

Generate conventional commit messages from a description. Supports feat/fix/docs/refactor/test types with scope and breaking changes.

Commit Message Linter

Paste commit messages and validate against the Conventional Commits specification. Get instant feedback with fix suggestions and properly formatted alternatives.

Commit Message Roulette

Guess whether hilarious commit messages are real or AI-generated. A fun game for developers.

Commit Message Validator

Validate commit messages against conventional commit standards with type/scope/subject analysis and fix suggestions

Commit Msg Previewer

The commit-msg-previewer is a web application that allows users to paste their commit messages and preview how they will render on popular version control platforms such as GitHub, GitLab, and Bitbuck

Community Forum

Discussion forum with threads and categories. Built with Next.js 15.

Compliance Checklist

Interactive compliance checklists for GDPR, SOC2, HIPAA, and ISO 27001 — track completion status and generate audit reports locally.

Component Accessibility Auditor

The component-accessibility-auditor is a web application that enables developers to paste their React or Vue HTML code and receive AI-generated suggestions for ARIA attributes and structural changes n

Component Library Showcase

```markdown

Component Prop Documenter

Paste a React/Vue/Svelte component and auto-extract its props with types, defaults, and descriptions into a beautiful documentation table.

Component Props Doc

Paste a React, Vue, or Svelte component to auto-generate a props documentation table with types and defaults.

Compound Interest

Visualize compound interest growth over time.

Compound Interest Calculator

Calculate compound interest with charts showing growth over time. Compare scenarios side-by-side.

Compound Interest Sim

An animated, interactive compound interest calculator that makes investing feel tangible. Watch your wealth grow in real time as you adjust initial investment, monthly contributions, annual return rat

Compound Interest Visualizer

Interactive compound interest calculator with animated charts showing growth over time.

Compound Interest Viz

Interactive compound interest calculator with timeline graph and milestone markers.

Compression Stream Benchmark

Compress and decompress files in-browser using the CompressionStream API. Zero-dependency compression with performance metrics.

Console Log Formatter

Design beautiful console.log outputs with CSS styling. Preview how your styled console messages will look and copy the console.log code.

Container Image Layer Viewer

Upload or reference a Docker image and visualize layers, sizes, and file changes per layer

Container Layer Inspector

Paste a Dockerfile, see each layer visualized as stacked blocks with size estimates, cache status, and optimization tips.

Container Query Playground

Interactive CSS Container Queries playground with visual breakpoint editor.

Container Size Calculator

Paste a Dockerfile and see the estimated size impact of each RUN, COPY, and ADD instruction with layer-by-layer optimization tips.

Content Calendar

A visual content calendar for creators, marketers, and developers. Plan posts across multiple platforms, track status, and never miss a publish date.

Content Creator Media Kit

Build a professional media kit page with follower stats, demographics, brand collaborations, and rates — export as PDF

Content Readability Analyzer

Paste text, get Flesch-Kincaid score, sentence complexity heatmap, jargon detector, grade level, and improvement suggestions.

Content Repurposer

Paste a long blog post and get it repurposed into multiple formats — Twitter thread, LinkedIn post, email newsletter, YouTube script outline, and Instagram carousel text.

Content Security Policy Builder

Interactive Content Security Policy header builder with directive explanations and live testing

Contract Clause Library

Reusable legal clause library with search, tagging, and version tracking for freelancers and SMBs.

Contract Generator

Simple legal contract templates with fill-in fields and PDF export

Contract Generator Pro

A guided contract generator for freelancers that produces professional, ready-to-use service agreements. Answer step-by-step questions about scope, payment, IP, and more — get a complete Markdown/prin

Contract Hours Tracker

Hourly-rate contract billing tracker with sessions, CSV export, and invoice generation.

Contract Renewal Monitor

Track SaaS and vendor contract renewals.

Contrast Checker Batch

Check WCAG contrast ratios for your entire color palette at once — find all failing pairs

Contrast Grid

Test color contrast across all palette combinations. Built with Next.js 15.

Contrast Grid Matrix

Enter multiple colors and see a matrix showing contrast ratios between every pair. Quick WCAG compliance overview.

Contrast Ratio Checker

WCAG 2.1 contrast ratio checker. Pick foreground and background colors, get AA/AAA compliance status with suggestions.

Cookie Analyzer

Inspect and decode browser cookies. Analyze SameSite, Secure, HttpOnly flags and detect tracking cookies.

Cookie Consent Auditor

Audit any website's cookie consent implementation for GDPR/CCPA compliance

Cookie Consent Banner Builder

Build GDPR-compliant cookie banners with generated code. Every website needs this, no SaaS required.

Cookie Consent Builder

Visual builder for GDPR-compliant cookie consent banners with customizable design and exportable code.

Cookie Consent Generator

Configure a GDPR/CCPA compliant cookie consent banner with visual editor, then copy-paste the generated HTML, CSS, and JavaScript into any website.

Cookie Consent Tester

Test website cookie compliance with GDPR and CCPA regulations.

Cookie Inspector

Visual cookie analyzer that decodes JWT cookies, shows SameSite flags, calculates expiry times, and categorizes by purpose.

Cookie Inspector Web

Analyze cookies on any website. Check for secure flags, SameSite attributes, expiry, and GDPR compliance issues.

Cookie Policy Generator

Generate a cookie policy document from a simple questionnaire. Select your cookie types, tracking tools, and jurisdiction — get a ready-to-publish policy.

Cookie Policy Scanner

Audit any website's cookie practices against GDPR/CCPA requirements with compliance checklist.

Corporate Directory Tree

Visual org chart and employee directory.

Correlation Matrix Viewer

Upload numeric CSV data and visualize correlations between columns as an interactive heatmap

Cors Debugger

A web-based utility for backend and frontend developers to debug Cross-Origin Resource Sharing errors. Users input an API endpoint and the tool simulates various `Origin` headers to see exactly which

Cors Debugger Interactive

Step-by-step CORS flow simulator — configure origins, methods, headers, and see preflight requests animated.

Cors Debugger Web

```markdown

Cors Error Debugger

Paste a CORS error message and get a human-readable explanation with step-by-step fix suggestions for your server setup.

Cors Header Builder

Design CORS response headers for your API. Built with Next.js 15.

Cors Header Tester

Test CORS configurations by simulating origins, methods, and headers with detailed pass/fail analysis

Cors Policy Simulator

Define origin, method, headers and simulate CORS preflight to see exactly what would happen. Understand CORS without trial and error.

Cors Policy Tester

Test CORS configurations interactively — simulate requests from different origins

Cors Tester

Test CORS configurations with visual request/response flow diagrams, preflight simulation, and detailed error diagnosis.

Countdown Timer Offline

Set a timer with alarm sound.

Coverage Map Builder

Build service area and coverage maps with polygon drawing, radius circles, and export options.

Cpu Scheduling Simulator

An interactive operating systems education tool that simulates CPU scheduling algorithms. Users add processes with arrival time, burst time, and priority, then run Round Robin, FCFS, SJF, or Priority

Crawl Budget Analyzer

Analyze crawl budget usage from server access logs with visualization and recommendations.

Crc Calculator Tool

Calculate CRC-8, CRC-16, CRC-32, and CRC-64 checksums for text and hex input with polynomial selection

Crc32 Calculator

Calculate CRC32 checksum of text or files.

Crdt Notepad

Local-first collaborative notepad using Conflict-free Replicated Data Types — works fully offline, syncs via WebRTC peer-to-peer when online.

Crdt Playground

Interactive visualization of CRDT operations. Watch merge, split, and concurrent edits step-by-step with animated state trees and convergence proofs.

Creative Writing Prompter

A creative writing prompt generator for fiction writers, bloggers, and students. Generate story starters, character concepts, dialogue prompts, and world-building ideas. Save and shuffle favorites.

Cron Builder

Visual cron expression builder — Click to select minutes/hours/days. Designed as a web project.

Cron Expression Builder

Visual drag-and-drop cron schedule builder with human-readable English preview.

Cron Expression Debugger

Visual cron scheduler with timeline preview showing next 100 executions and natural language input. Supports standard cron and extended syntax.

Cron Expression Explainer

Visual cron schedule explainer with timeline, next-runs calendar, and natural language translation.

Cron Expression Playground

A visual cron expression builder with a timeline preview showing the next 50 trigger times. Supports standard UNIX cron, AWS EventBridge rate/cron, and GitHub Actions schedule syntax. Every field is e

Cron Expression Translator

The cron-expression-translator app allows users to input a cron string and receive a natural language description of the schedule, such as "Every day at midnight." Additionally, the app provides the

Cron Expression Visual Builder

Drag-and-drop visual builder for cron expressions with live preview of the next 20 execution times and human-readable description.

Cron Expression Visual Calendar

Paste a cron expression and see every execution time rendered on a beautiful interactive calendar. Supports month, week, and day views with timezone conversion, next-N run previews, and natural langua

Cron Job Calendar

Enter cron expressions and see them plotted on a visual calendar/timeline showing exact execution times for a full month.

Cron Job Calendar View

Enter multiple cron expressions and see exactly when each job will fire on a visual calendar. Spot overlaps, gaps, and peak load times at a glance.

Cron Job Monitor

Visual cron schedule timeline with execution tracking. Enter your cron expressions and see a 24-hour timeline of when they fire. Never miss overlapping jobs.

Cron Job Monitor Dashboard

Visual dashboard for monitoring cron job execution history, success rates, and timing.

Cron Job Monitor Dashboard

Paste cron entries and visualize their schedule on a weekly timeline.

Cron Job Timeline

Paste multiple cron expressions to see overlapping visual timeline for the next 24h or week

Cron Job Visualizer

Visual timeline showing when cron expressions fire over customizable time periods with collision detection and natural language descriptions

Cron Schedule Cracker

Translate CRON strings to human-readable descriptions and show the next 10 execution times with timezone support.

Cron Schedule Explainer

Translate Cron expressions into human-readable schedules. Next run time predictor and visual calendar view.

Cron Schedule Visualizer

Enter a cron expression and see a visual timeline of when it fires over 24 hours, 7 days, or 30 days. Includes human-readable descriptions and next-run predictions.

Cron to English Translator

Convert complex cron expressions to plain English explanations

Cron Visual Builder

Build cron expressions visually with a calendar preview showing next 10 executions.

Crontab Calendar View

View cron expressions rendered as calendar events. See exactly when your cron jobs will fire on a day, week, or month view.

Crontab Editor

Visual cron expression builder with human-readable explanation and next run preview.

Crontab Explorer

Build and explain cron expressions visually. See a human-readable description of any cron schedule, preview the next N run times, and construct expressions with dropdowns.

Crontab Guru

Visual cron expression builder with natural language input, real-time next-run preview, and human-readable explanations.

Crontab Guru Local

Visual cron expression builder and validator. Offline-first.

Crontab Monitor

Visual cron schedule viewer with timeline showing when jobs run over 24h/week. Paste crontab and see the visual schedule.

Crontab Notification Planner

Plan and visualize when cron notifications will fire — never get surprised by late-night alerts

Crontab Translator

Translate cron expressions to and from human-readable English with next-run prediction and timezone support

Crontab UI Generator

Human-friendly cron expression builder with descriptions and next-run preview

Crontab Visual Editor

Build cron expressions visually with a calendar-like interface showing exactly when jobs will run next.

Crontab Visual Scheduler

Build cron schedules visually — drag sliders for minute, hour, day, month, weekday and see the resulting cron expression with next 10 execution times.

Crypto Portfolio

Track cryptocurrency holdings and performance. Built with Next.js 15.

Crypto Tax Calculator

Calculate crypto capital gains/losses with FIFO, LIFO, and HIFO methods

Crypto Tax Estimator

Estimate capital gains and losses from cryptocurrency transaction history with FIFO/LIFO methods.

Csp Builder Visual

Visual Content Security Policy builder with drag-and-drop source configuration

Csp Evaluator

Evaluate Content Security Policy headers for security weaknesses and misconfigurations

Csp Generator

Content Security Policy header builder. Built with Next.js 15.

Csp Header Builder

Visual Content Security Policy header builder with validation.

Csp Header Builder Visual

Build Content-Security-Policy headers visually with per-directive controls

Csp Header Generator

Build Content-Security-Policy headers with directive picker, unsafe-inline warnings, and hash/nonce generation

Csp Policy Builder

Visual Content Security Policy builder with live policy testing, violation reporting, and one-click export. Helps developers create secure CSP headers without memorizing directives.

CSP Policy Builder

Visual Content Security Policy builder with presets and directive toggles

Csp Policy Tester

Paste your Content-Security-Policy header and test it against common scenarios. Highlights violations and suggests fixes.

Csp Report Analyzer

Paste CSP violation reports and get human-readable explanations with fix suggestions

Csp Violation Reporter

Client-side CSP violation detector that captures and displays blocked resources in real-time

Csp Violation Simulator

Write a Content-Security-Policy and test it against sample resources to see what would break.

CSS Animation Builder

Visual keyframe animation builder with timeline. Built with Next.js 15.

CSS Animation Generator

Visual CSS animation builder — configure keyframes, timing, easing, and preview animations live. Export CSS code.

CSS Animation Keyframe Editor

Visual CSS keyframe animation editor with timeline interface. Add keyframes, adjust easing, preview live, export CSS.

CSS Animation Keyframe Generator

Build CSS @keyframes animations visually with timeline, easing, and live preview

CSS Animation Keyframe Recorder

Manipulate an element's position, size, rotation, and opacity — record the changes as steps and export as clean CSS @keyframes animation code.

CSS Animation Laboratory

Build and experiment with CSS animations visually. Create keyframes, adjust timing functions, combine transforms, and see results in real-time. Export production-ready CSS with zero manual coding requ

CSS Animation Library

Browse, customize, and copy 200+ CSS animations with live preview and keyframe editor

CSS Animation Playground

Interactive CSS animation builder — keyframes, timing functions, and chaining with live preview and code export.

CSS Animation Playground

Visual CSS animation builder — create keyframe animations with a timeline editor, live preview, and exportable CSS code.

CSS Animation Recorder

Build CSS animations with a visual timeline, preview them live, and export as CSS keyframes or record as GIF/WebM for documentation.

CSS Animation Sandbox

A visual tool to design, tweak, and export CSS `@keyframes` animations. Users can configure timing functions, delays, and iteration counts using an interactive timeline.

CSS Animation Timeline

Visual timeline editor for CSS keyframe animations with drag-and-drop keyframes, cubic-bezier curve editor, and live preview.

CSS Animation Timeline Editor

Visual timeline editor for CSS @keyframes animations with curve editing, preview, and code export.

CSS Art Challenge

Recreate pixel art targets using only CSS. Get scored on visual accuracy and code efficiency.

CSS Aspect Ratio Calculator

A simple, focused visual calculator for generating `aspect-ratio` CSS rules and fallback padded-box hacks for responsive videos, images, and embedded iframes.

CSS Battle Clone

Replicate visual targets using minimal CSS in timed rounds. Score based on accuracy and character count.

CSS Battle Playground

Recreate target designs using only CSS. Get scored on accuracy and code length.

CSS Border Radius Morpher

A visual tool for creating complex CSS shapes using the 8-value `border-radius` property. Generate organic, blob-like shapes interactively by dragging control points, and output the exact CSS code ins

CSS Border Radius Previewer

Visually design complex border-radius values by dragging corner handles. Preview on different shapes and export CSS.

CSS Box Model Visualizer 3d

An interactive 3D visualization of the CSS Box Model. By default, the box model is flat, which causes confusion. This tool rotates a DOM element 45 degrees in 3D space and visually separates Margin, B

CSS Box Shadow Gen

Visual generator for CSS box-shadows.

CSS Box Shadow Generator

Design beautiful CSS box shadows visually. Multiple shadow layers, live preview, and one-click CSS copy.

CSS Box Shadow Sandbox

A web-based visual generator specifically focused on creating smooth, layered, realistic CSS box shadows. Users can add multiple shadow layers, tweak blur, spread, X/Y offsets, and opacity, then copy

CSS Box Shadow Studio

Multi-layer box-shadow CSS generator with drag handles, presets, and smooth animations.

CSS Clip Path Editor

A visual bounding-box editor for creating unique CSS non-rectangular shapes using `clip-path: polygon`.

CSS Clip Path Generator

Interactive CSS clip-path editor. Choose from polygon, circle, ellipse, or inset shapes with live preview and code export.

CSS Clip Path Maker

Visual editor for CSS clip-path shapes using polygon, circle, ellipse, and inset with drag handles and live preview.

CSS Container Query Lab

Interactive CSS Container Queries playground with visual container resize and responsive components

CSS Container Query Playground

Experiment with CSS container queries — resize containers and see responsive behavior

CSS Easing Curve Generator

A visual bezier curve editor to create custom CSS timings . Test it against a live CSS animation block instantly and compare against standard eases .

CSS Filter Generator

Visual CSS filter property builder. Built with Next.js 15.

CSS Filter Playground

Interactive playground for all CSS filter functions: blur, brightness, contrast, grayscale, hue-rotate, invert, saturate, sepia, and drop-shadow.

CSS Flexbox Cheat Sheet

A web-based reference and teaching tool for CSS Flexbox. Instead of static documentation, users click buttons for various Flexbox properties to see child elements physically animate to their new posit

CSS Flexbox Playground

Interactive CSS Flexbox layout playground.

CSS Glassmorphism Generator

A visual tool dedicated to creating beautiful "frosted glass" UI elements. Fine-tunes `backdrop-filter`, transparency, and subtle borders.

CSS Gradient Generator

A visual CSS gradient builder with linear, radial, and conic gradient support. Real-time preview, color stops editor, and one-click CSS copy.

CSS Gradient Generator Pro

Advanced CSS gradient editor supporting linear, radial, conic, and mesh gradients. Export CSS with vendor prefixes.

CSS Grid Area Designer

Visual CSS Grid template areas designer with drag-and-drop and live code generation

CSS Grid Area Painter

Paint grid areas visually on a canvas and get CSS grid-template-areas code with responsive breakpoints and named grid line output.

CSS Grid Art Builder

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CSS Grid Builder

Visual CSS Grid generator — Drag to define grid areas. Designed as a web project.

CSS Grid Generator

A visual drag-and-drop tool to generate complex CSS Grid layouts. Users can define columns, rows, gaps, and visually place child elements, then instantly copy the generated HTML/CSS.

CSS Grid Generator Advanced

Drag-and-drop CSS Grid builder with named grid areas, implicit tracks, responsive breakpoints, and code export

CSS Grid Generator Visual

Visually design CSS Grid layouts by drawing cells on a grid. Set gaps, alignment, and named areas. Export clean code.

CSS Grid Layout Debugger

Visual CSS Grid inspector with area naming, gap visualization, and code export.

CSS Grid Layout Generator

Visual CSS Grid layout builder. Drag and drop to create complex grid structures and export clean CSS/HTML code.

CSS Grid Layout Visualizer

Visual drag-and-drop grid builder that lets you design CSS Grid layouts interactively and outputs clean CSS code.

CSS Grid Playground

Visual CSS Grid builder with drag-and-drop grid areas, gap/sizing controls, and live code export. Build complex grid layouts without memorizing syntax.

CSS Grid Puzzle

Learn CSS Grid by solving visual puzzles — arrange items to match target layouts using grid-template properties

CSS Grid Template Builder

Visual drag-and-resize CSS Grid layout builder with named areas, responsive variants, and code export.

CSS Grid Visualizer

Interactive CSS Grid builder that generates the CSS code. Simplifies complex flex/grid layouts.

CSS Has Selector Playground

Interactive playground for the CSS `:has` selector. Write selectors, see live preview, and check browser compatibility.

CSS Has Selector Tester

Test and visualize the :has parent selector with live examples. The missing CSS selector finally demystified.

CSS Minifier Tool

Minify and optimize CSS code.

CSS Nesting Converter

Convert traditional CSS to native CSS nesting syntax and back. Migration tool for the new native nesting spec.

CSS Scroll Snap Builder

Visual scroll snap area builder with snap-type, snap-align, and proximity controls with live preview

CSS Scroll Snap Designer

Visual designer for CSS scroll-snap with breakpoint preview. Configure scroll snap behavior interactively.

CSS Selector Specificity Calc

Enter CSS selectors and instantly see their specificity score. Compare multiple selectors and understand which one wins the cascade.

CSS Shadow Smoother

Visual tool to layer multiple box-shadows for ultra-smooth, realistic shadows with live preview and CSS output.

CSS Specificity Battle

Gamified CSS specificity calculator — paste two CSS selectors, see which one wins with animated battle visualization. Learn CSS specificity through play.

CSS Specificity Calc

Calculate and compare CSS specificity scores. Built with Next.js 15.

CSS Specificity Calculator

Enter any CSS selector and instantly see its specificity score visualized as a color-coded bar chart. Compare multiple selectors side-by-side.

CSS Specificity Calculator Visual

Calculate and compare CSS specificity scores with visual bar charts and selector breakdown explanation.

CSS Specificity Visualizer

A visual tool to understand CSS specificity. Paste selectors and see their specificity scores as visual bars, sorted by weight. Learn which selector wins.

CSS Specificity Wars

An interactive CSS utility that calculates and visualizes CSS specificity weights to help developers understand why their styles aren't applying.

CSS Specificity Wars

Two CSS selectors battle — predict which one wins! Learn specificity by predicting outcomes with escalating difficulty.

CSS Subgrid Layout Builder

Visual builder for CSS Subgrid with live preview. Design complex nested grid layouts with subgrid alignment.

CSS Transform Playground 3d

An interactive 3D laboratory for visualizing and understanding CSS `transform` properties . Manipulate a cube in 3D space with sliders and immediately see the corresponding CSS output.

CSS Variable Analyzer

Paste your CSS and analyze all custom properties . See usage frequency, unused variables, and dependency chains.

CSS Variable Extractor

Paste CSS code and automatically extract repeated values into CSS custom properties with usage replacement.

CSS Variable Theme Builder

Visual editor for CSS custom properties — build complete light/dark theme systems with color scales, spacing, typography, and live preview.

CSV Chart Builder

Upload CSV data and build interactive charts with zero coding required.

CSV Explorer

Upload CSV files and explore data with auto-type detection, filtering, sorting, charting, and export. All in-browser.

CSV Pivot Table

Upload CSV files and create interactive pivot tables. Drag fields to rows/columns/values. Filter, sort, and export results.

CSV Query Engine

Upload a CSV file and query it using SQL-like syntax directly in the browser — no server needed

CSV To JSON Converter

Convert CSV data to JSON array.

CSV To Sqlite Converter

The csv-to-sqlite-converter is a web application that allows users to easily drag and drop CSV files, automatically inferring the schema of the data contained within. Once processed, users can downloa

Cue Lang Playground

Write and evaluate CUE expressions with validation, export, and error reporting

cURL Command Builder

Build complex curl commands with a UI — headers, auth, body, flags

Curl To Code

Paste a cURL command to convert it to fetch, axios, Python requests, Go http, or PHP code.

Curl To Code Converter

Convert cURL commands to code in 10+ languages with formatting

Curl To Fetch

Convert cURL commands to JavaScript fetch.

Curl To Fetch Converter

Convert cURL commands into JavaScript Fetch, Python Requests, Go, and other language snippets.

Currency Converter

Offline currency converter with saved exchange rates.

Customizable Select Preview

Preview the upcoming stylable select element with CSS. Solves the #1 web styling pain point.

Customs Duty Calculator

Calculate import duties and tariffs by HS code, country of origin, and destination.

Daily Checklist

Simple daily checklist that resets each day.

Daily Journal

Minimalist daily journaling app with writing prompts, mood tracking, and streak counting. All entries stored locally — private by design.

Daily Journal Web

Private, client-side encrypted daily journaling app with mood tracking and search.

Daily Standup Gen

Template-based standup note generator — quickly fill in yesterday/today/blockers, copy formatted output to clipboard for Slack or Teams.

Daily Standup Generator

The daily-standup-generator is a web application designed to streamline the daily standup process for development teams. Users can input their yesterday's commits, today's goals, and any blockers they

Daily Standup Generator

Quick daily standup message builder — fill in yesterday/today/blockers and generate formatted messages for Slack, Teams, or Discord

Daily Standup Randomizer

Randomly order team members for daily standup — with timer per person and history

Daily Standup Template

Fill-in-the-blank daily standup form with copy-to-clipboard and Slack-ready formatting.

Daily Writing Prompt Engine

A distraction-free creative writing companion that generates unique daily prompts across genres , tracks your writing streak, and stores entries locally. Zero cloud, zero accounts — just you and the p

Data Anonymizer Tool

Paste JSON, CSV, or SQL data and automatically anonymize PII with realistic fake data — all processing local

Data Breach Checker

Check if email appears in known breaches using local k-anonymity hash — no email sent to any server.

Data Faker

Generate realistic fake data in bulk. Names, emails, addresses, dates, and more — export as JSON, CSV, or SQL.

Data Faker Generator

Generate realistic fake data in bulk with multiple locales.

Data Faker Playground

Generate realistic fake data for testing — names, emails, addresses, products, and more

Data Faker Tool

Generate fake but realistic data: names, emails, addresses, phone numbers, dates, UUIDs. Export as JSON, CSV, or SQL inserts.

Data Masking Tool

Mask sensitive data in JSON, CSV, or text — emails, phone numbers, SSNs, credit cards

Data Pipeline Flowchart

Drag-and-drop ETL pipeline builder — sources, transforms, sinks. Generates Airflow/Prefect YAML configuration.

Data Pipeline Lineage

Visual lineage graph for ETL jobs.

Data Quality Checker

Analyze CSV datasets for missing values, outliers, duplicates, and type inconsistencies

Data Uri Generator

Convert images/files to Data URI strings.

Data Uri Toolkit

Encode/decode Data URIs for any file type. Preview images, fonts, and SVGs inline.

Data URL Converter

Convert files to and from data URLs. Supports images, fonts, SVGs. Shows file size comparison and base64 output.

Data URL Encoder

Encode files to data URLs with size comparison, MIME detection, and copy-ready output

Database Diagram Draw

A browser-based ER diagram editor. Draw database tables, define columns and relationships, then export as SQL DDL, Prisma schema, or PNG. The free, offline alternative to dbdiagram.io.

Database Er Diagram Builder

Draw entity-relationship diagrams interactively and export as SQL migration scripts.

Database Er Diagram Tool

Design entity-relationship diagrams visually. Define tables, columns, relationships. Export as SQL CREATE statements.

Database Index Advisor

Paste SQL queries and schema DDL, locally analyze query patterns, and get missing index suggestions with EXPLAIN simulation.

Database Migration Diff

Compare two database schemas and generate migration SQL automatically. Schema diffing made visual.

Database Migration Diff Viewer

Paste two SQL schemas, get a visual diff showing added, removed, and modified tables, columns, indexes, and constraints.

Database Migration Planner

Plan and visualize database schema migrations — track columns to add, rename, or drop with a timeline view and SQL generation

Database Schema Analyzer

A reverse-engineering tool for databases — paste CREATE TABLE statements and get a visual explanation of what each table does, its relationships, potential issues, and optimization suggestions. Like a

Database Schema Designer

A visual, browser-based entity-relationship diagram tool for designing database schemas. Developers can create tables, define columns and data types, draw relationships, and export the schema as SQL

Database Schema Diagram Editor

Draw ER diagrams visually — drag-and-drop tables, define relationships, export SQL.

Database Schema Diff

Compare two SQL schemas side-by-side — highlight differences and generate migration SQL to sync them.

Database Schema Timeline

Visualize database schema changes over time — paste multiple SQL migration files and see how your schema evolved in a beautiful interactive timeline.

Database Schema Visualizer

Paste SQL DDL statements and auto-generate beautiful ER diagrams. Visualize tables, columns, relationships, and foreign keys.

Database Schema Visualizer Web

Visualize DB relationship from SQL DDL.

Date Difference Calculator

Calculate duration between two dates.

Db Query History Viewer

A local-first browser tool that lets developers paste or import SQL query logs and visualizes them as a searchable, filterable timeline. Helps debug performance regressions by seeing which queries ran

Dead Code Detector

Paste JavaScript or TypeScript source files to identify unused exports, functions, imports, and variables. Visualize dependency graphs and get actionable cleanup suggestions.

Dead Code Detector Visual

Paste JavaScript or TypeScript code and get a visual heatmap showing unused functions, unreachable branches, unused exports, and dead variables — all analyzed client-side.

Dead Link Checker

Paste a URL to crawl all links on the page and report broken ones with HTTP status codes. Runs entirely in-browser.

Decision Journal

Log decisions with context, reasoning, and outcomes — review past decisions to improve future judgment. A solo developer's thinking companion.

Decision Matrix

Weighted decision matrix tool — input options, criteria, scores — get ranked result.

Decision Matrix Builder

Visual weighted decision matrix with scoring sliders and automatic winner calculation.

Decision Matrix Maker

Build weighted decision matrices — compare options across criteria with scoring.

Decision Matrix Tool

Make better decisions using weighted criteria scoring with visual comparison charts

Decision Matrix Tool

Create weighted decision matrices to objectively compare options across multiple criteria. Score each option, assign importance weights, and see the clear winner.

Decision Spinner Wheel

Spin a wheel to make a decision.

Decision Tree Builder

Build interactive decision trees visually — great for troubleshooting guides and flowcharts

Declarative Infra Cost Calc

Define your app's infrastructure needs and instantly see estimated monthly costs across AWS, GCP, Azure, Vercel, and Fly.io — side-by-side comparison.

Deep Work Timer

A focus timer built around the principles of deep work. Configure work blocks, breaks, and distraction blockers. Tracks your daily deep work sessions and builds a visual streak calendar.

Deep Work Timer

Focus timer that goes beyond Pomodoro — tracks deep work windows, logs flow states, and provides weekly analytics with productivity insights.

Dependabot Config Builder

Generate GitHub Dependabot configuration YAML with package ecosystem selection, schedule, and reviewer assignment

Dependency Checker

Paste package.json and check for outdated dependencies, known vulnerabilities, and estimated bundle sizes.

Dependency Conflict Resolver

A visual tool to analyze and resolve npm/yarn/pnpm dependency conflicts. Paste your package.json or package-lock.json and the tool maps the dependency tree, highlights version conflicts, and suggests

Dependency Deprecation Radar

Paste your package.json or requirements.txt and instantly see which dependencies are deprecated, unmaintained, or have known vulnerabilities — with migration paths.

Dependency Drift Dashboard

Visualize how outdated all your project dependencies are with risk scoring. Paste your package.json and see the health of every dependency.

Dependency Graph 3d

Paste your package.json and visualize your dependency tree as an interactive 3D force-directed graph. See which packages are the heaviest and most connected.

Dependency Graph Explorer

Paste a package.json, requirements.txt, or go.mod and see your dependency tree as an interactive graph. Identify circular dependencies, heavy subtrees, and outdated packages at a glance.

Dependency Graph Mapper

Upload package.json, go.mod, or Cargo.toml and visualize dependency trees as interactive force-directed graphs.

Dependency Graph Viz

Paste a package.json and get an interactive dependency tree visualization with bundle size estimates, vulnerability indicators, and depth analysis.

Dependency Health Checker

Paste your package.json and get an instant health report: outdated packages, known vulnerabilities, unused dependencies flags, and upgrade recommendations. Works entirely in-browser.

Dependency Health Dashboard

Enter a package.json URL or paste contents, see dependency health scores.

Dependency Hell Escape

Navigate a maze of conflicting package versions to escape dependency hell. Puzzle game with real npm package scenarios.

Dependency License Audit

Paste a package.json and get a complete license compliance report for all dependencies with risk assessment.

Dependency License Auditor

Paste a `package.json` and instantly get a full license audit for every dependency. Flags GPL, AGPL, and license-incompatible combinations with clear pass/fail verdicts. Helps developers and teams ens

Dependency License Checker

Scan project dependencies and generate license compliance reports.

Dependency License Checker Web

Paste package.json and get instant license audit with compatibility matrix, risk flags, and SPDX compliance check

Dependency License Matrix

Upload package.json or requirements.txt — get a visual matrix of all dependency licenses with compatibility checks and risk flags.

Dependency License Viewer

Paste a package.json or requirements.txt to see all dependency licenses at a glance. Flags GPL contamination, highlights permissive vs copyleft, and generates compliance reports.

Dependency Tree Viewer

Visualize package.json dependencies as an interactive tree graph showing sizes, versions, and relationships.

Dependency Tree Visual

Paste a package.json and see an interactive dependency graph visualization. Explore nested dependencies, identify shared packages, and understand your project's dependency structure at a glance.

Dependency Vulnerability Scanner

Check package.json or requirements.txt against OSV.dev for known vulnerabilities

Deploy Checklist Gen

Generate customized deployment checklists based on your stack and environment.

Deployment Checklist Builder

Interactive deployment checklists — customize, save, and reuse for different projects.

Deployment Checklist Generator

Generate comprehensive deployment checklists for your tech stack. Select your stack and deployment target , and get a step-by-step pre-flight checklist with links.

Deployment Frequency Tracker

DORA metrics dashboard.

Design Token Converter

Convert design tokens between formats — Figma Tokens JSON, Style Dictionary, CSS custom properties, Tailwind config, and SCSS variables

Design Token Playground

Create and preview design tokens — colors, spacing, typography, shadows.

Dev Bingo Generator

Custom bingo cards for tech conferences, sprint retros, or team events

Dev Journal Daily Log

A dead-simple daily developer journal. One entry per day with structured sections: what I built, blockers, learnings, tomorrow's plan. Export as markdown for your portfolio blog. No distractions, just

Dev Portfolio Generator

Generate a developer portfolio website from GitHub profile data with customizable themes.

Dev Work Log

A local-first developer work log for tracking what you worked on each day. A daily dev diary — log your accomplishments, blockers, notes, and PRs per day, and generate a weekly summary you can paste i

Developer Bookmarks Hub

A local-first bookmark manager built specifically for developers. Organize links by tech stack, tag with custom labels, add notes to each bookmark, and get a beautiful visual grid. No account needed,

Developer Roadmap

Interactive technology career roadmap with progress tracking, resource links, and personalized learning paths.

Device Info Viewer

View browser and device capabilities.

Dice Roller Sim

Simulate rolling various dice .

Diff Checker

Compare two code snippets with syntax highlighting.

Diff Viewer

Visual side-by-side text and code diff comparison tool

Digital Garden

Personal knowledge garden with bidirectional links. Built with Next.js 15.

Digital Garden Builder

Create and publish a personal knowledge garden with bidirectional links and graph visualization.

Distributed Team Clock

A visual timezone dashboard for remote teams showing everyone's local time simultaneously, with working hours overlap detection, meeting time scoring, and a one-click "best time" finder — all offline

DNS Leak Test

Test if DNS queries are leaking outside your VPN tunnel with detailed diagnostic results.

DNS Leak Tester

Check if your DNS queries are leaking outside your VPN tunnel with server location mapping

DNS Lookup

Browser-based DNS toolkit — Query A, AAAA, MX, TXT records. Designed as a web project.

DNS Lookup Tool

Look up DNS records for any domain with visual output and export.

DNS Lookup Visual

Visualize DNS resolution chain — enter a domain, see A, AAAA, MX, CNAME, NS, TXT records in a beautiful tree layout.

DNS Propagation Checker

Visual DNS propagation status checker across global resolver locations

DNS Propagation Checker

Check DNS propagation across global servers with world map visualization.

DNS Propagation Checker

Visual DNS propagation tracker — enter a domain and see real-time results across 25+ global servers with an interactive map view.

DNS Propagation Checker Visual

Check DNS propagation across global resolvers with a visual world map. Essential DevOps tool with a nice visual angle.

DNS Propagation Map

Enter domain to see world map showing DNS propagation status per region in real-time

DNS Propagation Simulator

Simulate DNS resolution across global resolver chains with animated packet flow, TTL countdown, and caching layers visualization.

DNS Propagation Visualizer

Visualize DNS propagation across the globe in real-time. Enter a domain, see how DNS records resolve from different geographic locations on an interactive world map. Track TTL countdowns and identify

DNS Record Builder

Visual DNS record editor. Build A, AAAA, CNAME, MX, TXT, SRV, CAA records with validation, explanations, and export to BIND zone file format.

DNS Record Builder Wizard

Step-by-step wizard for building DNS records with validation and copy-ready output.

DNS Record Debugger

A visual DNS debugging tool that lets developers trace DNS resolution for any domain — showing the full chain of CNAME redirects, MX records, SPF/DKIM/DMARC email authentication records, and propagati

DNS Record Explainer

Paste any DNS record and get a plain-English explanation of what it does and why it matters

DNS Record Explorer

A visual DNS record lookup tool. Enter a domain and see all DNS records in a clean, categorized interface.

DNS Record Lookup

Look up DNS records for any domain using public DNS-over-HTTPS APIs.

DNS Record Viewer

Look up and visualize DNS records for any domain. Shows A, AAAA, MX, TXT, CNAME, NS records in a clean dashboard.

DNS Record Visualizer

Enter a domain to visualize its complete DNS resolution chain including A, AAAA, CNAME, MX, TXT, and NS records.

DNS Ttl Calculator

Calculate DNS TTL values across record types with propagation timeline estimator and cache viz

Docker Compose Builder

Visual Docker Compose file builder — drag services, configure ports/volumes/networks, export valid YAML.

Docker Compose Builder

A visual docker-compose.yml builder. Pick services from a catalog , configure them visually, and export a valid docker-compose.yml. No YAML knowledge required.

Docker Compose Diff

Compare two docker-compose.yml files side by side highlighting added, removed, and changed services.

Docker Compose File Builder

A web-based GUI that helps junior backend developers construct complex `docker-compose.yml` files without fighting YAML indentation errors.

Docker Compose Validator

Paste a docker-compose.yml file to validate syntax, lint configuration, and visualize service dependencies as an interactive graph.

Docker Compose Visual Builder

Drag-and-drop interface to build docker-compose.yml files visually — add services, networks, volumes, and dependencies with real-time YAML preview.

Docker Compose Visual Editor

Visual drag-and-drop editor for docker-compose.yml files with real-time YAML preview and validation.

Docker Compose Visualizer

Upload a docker-compose.yml file to generate an interactive network diagram showing services, volumes, and dependencies.

Docker Compose Visualizer

Upload a docker-compose.yml and see an animated network graph of services, ports, volumes, and dependencies.

Docker Ignore Builder

Generate .dockerignore files with common presets, glob pattern builder, and file size impact preview

Docker Layer Analyzer

Visualize Docker image layers, identify large layers, and get optimization recommendations.

Docker Layer Analyzer

Analyze Dockerfile layer sizes and optimize image builds with actionable suggestions

Docker Run Builder

Visual builder for `docker run` commands with flag explanations, port mapping, volume mounts, env vars, and copyable command output.

Dockerfile Linter

Lint and optimize Dockerfiles with best practice suggestions and security checks.

Dockerfile Linter Visual

Lint Dockerfiles with visual annotations and best-practice suggestions. Hadolint in the browser.

Dockerfile Security Scanner

Paste a Dockerfile, get instant security and best-practice analysis with severity-ranked findings and fix suggestions.

Documentation Site

Create beautiful documentation with versioning. Built with Next.js 15.

Docx To Markdown

Convert Word documents to clean Markdown with formatting preservation in browser

DOM Tree Visualizer

Paste HTML and see the DOM tree rendered as an interactive, collapsible tree diagram.

Domain Appraisal Tool

Estimate domain name value based on keywords, length, TLD, and comparable sales data.

Dotfile Generator

Generate common dotfiles with visual configuration

Dpi Ppi Calculator

Enter screen dimensions and resolution to calculate DPI and PPI. Compare devices, understand display density, and make informed responsive design decisions.

Drawing App

Feature-rich browser-based drawing application using Canvas API. Includes brushes, shapes, layers, and color tools. Export artwork as PNG or SVG. All client-side, no backend needed.

Drum Machine

Interactive drum machine with a 16-step sequencer grid. Load drum kit sounds via Web Audio API, program beats visually, and play them in a loop. Features BPM control, multiple kits, and pattern saving

Dummy JSON API Mocker

Define a schema visually, generate realistic mock JSON responses instantly for frontend prototyping.

Duotone Image Filter

Upload an image and apply Spotify-style duotone color filters with custom gradient picker, intensity control, and batch export.

Duplicate Line Remover

Remove duplicate lines from a text list.

E Ink Typography Tester

A web utility for developers and designers building for e-ink displays . It simulates the low refresh rate, ghosting, 16-level grayscale, and specific e-ink font rendering quirks to test how CSS/HTML

Earthquake Visualizer Indonesia

Real-time earthquake visualization for Indonesia using BMKG data. See recent earthquakes plotted on an interactive map of the Indonesian archipelago with magnitude, depth, and tsunami warning indicato

Ebook Reader Local

A privacy-first, offline EPUB reader that runs entirely in the browser. Drag and drop EPUB files to read with customizable fonts, themes, bookmarks, and reading progress — no data sent anywhere.

Edi Message Viewer

Parse and visualize EDI messages with segment-level explanations

Editorconfig Generator

Generate .editorconfig files with visual rule editor for indent style, charset, EOL, and trim trailing whitespace

Eisenhower Matrix

Drag-and-drop priority matrix based on the Eisenhower framework. Categorize tasks by urgency and importance into four quadrants with visual task management.

Eisenhower Matrix Planner

Prioritize tasks using the Eisenhower urgent/important matrix with drag-and-drop

Elasticsearch Query Builder

Visual query builder for Elasticsearch with JSON preview and syntax validation.

Elderly Tech Helper

A simplified technology guide for seniors with extra-large buttons, high contrast, and step-by-step tutorials for common tasks like video calling, sending photos, and using WhatsApp. Designed for gran

Electricity Token Calculator Id

Calculate how many kWh you'll get from prepaid electricity tokens in Indonesia. Input your PLN token amount and see estimated usage based on your appliance list. Track daily electricity spending.

Element Fusion

Little Alchemy-style element combining game with 500+ discoverable elements and periodic table mechanics.

Email Alias Generator

Generate random email aliases for signups — pattern suggestions, customizable formats, and copy-to-clipboard. Reduce spam without a third-party service.

Email Breach Checker

Check if an email address appears in known data breaches with risk assessment and recommendations.

Email Deliverability Checker

Check SPF, DKIM, DMARC records for any domain with setup guidance and troubleshooting tips

Email Deliverability Tester

Check SPF, DKIM, DMARC records and blacklist status for any domain — all client-side DNS queries, no account required.

Email Extractor Tool

Extract email addresses from a large block of text.

Email Header Analyzer

Paste raw email headers to see a visual hop-by-hop trace with delay analysis and SPF/DKIM/DMARC verification display.

Email Header Parser

Paste raw email headers and see a visual trace of the message path with SPF/DKIM/DMARC verification status

Email HTML Previewer

Write HTML email code and preview rendering across Gmail, Outlook, Apple Mail, and Yahoo. Highlights unsupported CSS properties per client.

Email Signature Builder

Design professional email signatures with drag-and-drop — export as HTML for any email client.

Email Signature Generator

Design professional HTML email signatures with templates

Email Subject Line Tester

A local-first email marketing tool that scores and improves your email subject lines. Paste a subject line and get instant scores for open rate potential, spam risk, character length, emoji usage, and

Email Template Builder

Drag-and-drop HTML email builder with inline CSS for maximum compatibility.

Email Template Builder

Create reusable email templates with variables, preview, and one-click copy.

Email Template Builder

Build responsive HTML email templates with drag-and-drop blocks and preview across email clients.

Email Template Preview

Preview HTML email templates across different email client renderings with inline CSS processing.

Email Template Previewer

Write and preview HTML email templates across email clients.

Email Template Tester

A browser-based HTML email previewer that simulates how emails render across different clients . Write HTML email code and instantly see mock previews — free alternative to Litmus/Email on Acid.

Email Template Tester Offline

Build and preview responsive HTML emails across simulated email clients — all local, no cloud service required.

Emergency Fund Calculator

A guided emergency fund planning tool. Input your monthly expenses and get a personalized emergency fund target, track your savings progress, and get tips to accelerate building your financial safety

Emoji Code Map

Searchable map of Emojis and their codes.

Emoji Commit Wizard

Generate meaningful git commit messages with conventional commit format and relevant emojis . Paste your diff or describe changes in plain text, get a perfectly formatted commit message with the right

Emoji Kitchen Local

Combine two emojis to create mashup emoji art locally. Browse combinations, download as PNG or copy as Unicode.

Emoji Kitchen Mixer

Combine two emojis to create a unique hybrid emoji mashup. Browse suggested combinations, see popular mixes, and download your creations as PNG. A fun creative tool inspired by Google's Emoji Kitchen.

Emoji Picker

Searchable emoji picker with categories and copy-to-clipboard.

Emoji Picker Search

Search and browse all Unicode emojis with category filtering, skin tone modifiers, and one-click copy. Includes recently used and favorites.

Emoji Search Copy

Search emoji by name or keyword, see platform-specific variations, and copy to clipboard with one click. A fast, standalone emoji picker with categorized browsing.

Emoji Search Tool

Search and explore all Unicode emojis with category browsing, skin tone variants, and copy-to-clipboard

Empty State Gallery

Browse 200+ beautifully designed empty state components. Preview, customize, and copy the HTML/CSS for any design. Never design an empty state from scratch again.

Encoding Tool

Multi-format encoder/decoder . Built with Next.js 15.

Env Diff Checker

Visual diff tool for .env files — compare local vs staging vs production, highlight missing/mismatched variables

Env File Comparator

Compare two .env files side-by-side to instantly spot missing, extra, and changed variables. Perfect for debugging environment mismatches between local, staging, and production.

Env File Compare Merge

Compare two .env files side by side, highlight differences, find missing variables, and merge them into a single output with conflict resolution.

Env File Diff

Compare two .env files side-by-side with missing variable detection, value masking, type analysis, and merge with conflict resolution.

Env File Diff Merger

Compare and merge `.env` files from different environments . Highlights missing variables, value conflicts, and suspicious patterns like exposed secrets — the environment config management tool every

Env File Diff Tool

Compare two .env files side-by-side — highlight missing, extra, and changed variables with merge UI.

Env File Editor

Visual editor for .env files with syntax highlighting, validation, secret masking, and comparison between environments.

Env File Manager

Visual `.env` file editor — paste or upload multiple `.env` files, diff between environments , detect missing variables, validate against `.env.example`, and export corrected files.

Env File Merger

Merge multiple .env files with intelligent conflict detection and resolution UI. Compare .env.local, .env.staging, and .env.production side by side.

Env File Visual Diff

Compare two .env files side-by-side with visual highlighting of missing keys, changed values, type mismatches, and ordering differences — essential for deployment debugging.

Env Var Documentation Gen

Generate beautiful documentation from .env files with types, defaults, and descriptions

Env Var Formatter

Convert between .env, JSON, Docker Compose, Shell Export, and YAML formats instantly. Speeds up DevOps context switching.

Env Var Manager

Compare .env files across environments with diff view and secret masking. End the chaos of .env management.

Env Var Validator

Paste .env and .env.example files to detect missing variables, type mismatches, and get suggestions for safe defaults.

Environment Variable Validator

Paste a .env file and validate it against a schema — check for missing vars, type mismatches, empty values, and security issues like hardcoded secrets.

Environment Variable Vault

Encrypted local .env file editor with diff, search, key grouping, and team sharing via copy-paste.

Ephemeral Password Vault

A hyper-secure, ephemeral password manager designed for extremely temporary use . Passwords are only held in active RAM. When the browser tab is closed or reloaded, everything is annihilated forever.

Epub Metadata Editor

Edit EPUB ebook metadata — title, author, cover, description — without modifying content

Epub Reader Local

In-browser EPUB reader with drag-and-drop, bookmarks, and local storage persistence

Epub Reader Offline

Privacy-first EPUB reader that works entirely offline. Bookmarks, highlights, font customization, and reading progress tracking.

Equipment Calibration Log

Digital calibration tracking for small labs. Track equipment, schedules, and generate ISO-ready audit reports.

Error Code Encyclopedia

Universal search engine for error codes across programming languages, frameworks, and operating systems. Paste an error code, get explanations and solutions.

Error Code Registry

Create and browse a searchable registry of error codes with descriptions and solutions

Error Log Interpreter

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Error Message Explainer

Paste any error message — stack trace, compiler error, runtime exception — and get a plain-English explanation, likely causes, and step-by-step fix suggestions. Works offline with a built-in knowledge

Eslint Config Builder

Generate ESLint configuration files visually by selecting rules, plugins, and presets with conflict detection

Event Loop Visualizer

Step-by-step visualization of the JavaScript event loop — microtasks, macrotasks, rendering pipeline, with custom code input.

Event Planner

Plan events with checklists, guest lists, and budget tracking. Built with Next.js 15.

Event Rsvp

Create event pages with RSVP and guest management. Built with Next.js 15.

Excel Formula To Code

Paste an Excel formula and get equivalent code in Python, JavaScript, SQL, or R. Explains the formula step-by-step and handles nested functions.

Excel To Web API Converter

Paste or upload an Excel/CSV file and get an instant mock REST API with endpoints, query params, pagination, and filtering — all client-side with no server required.

Exif Data Scrubber

A drag-and-drop web utility that completely strips all metadata from photos entirely locally before they are shared online.

Exif Stripper

Privacy-focused image metadata remover. Upload photos and strip all EXIF/GPS/camera data before sharing. Processes entirely in the browser using Canvas API — images never leave the device.

Expense Category Analyzer

Paste bank statement CSV and auto-categorize expenses with visual spending breakdown

Expense Receipt Scanner

OCR scan receipts directly in the browser, categorize expenses, and export to CSV or accounting software.

Expense Tracker

Personal expense tracking app with categories, budgets, and charts.

Expired Domain Finder

Search expiring and expired domains with authority metrics, backlink counts, and availability.

Eye Dropper Color Picker

Pick colors from anywhere on screen using the EyeDropper API. The best free browser-native color picker.

Face Filter Playground

Creative app applying real-time WebGL filters and masks to detected faces in a video stream. Fun Snapchat-like face filters built entirely in the browser using Shape Detection API and Canvas/WebGL.

Factorial Calculator

Calculate factorial of a number.

Fake Data API Playground

Define a JSON schema and instantly get a working mock API endpoint that returns realistic fake data. No backend needed — runs entirely in the browser.

Fake Data Generator Pro

Generate realistic fake data for testing — names, emails, addresses, phone numbers, credit cards, UUIDs, and more. Supports multiple locales including Indonesian data . Export as JSON, CSV, or SQL INS

Favicon Audit Tool

Check all favicon variants, sizes, and compatibility across browsers and platforms.

Favicon Emoji Generator

Generate favicons from emoji characters with size variants, background colors, and format export .

Favicon Extractor

Enter any URL and extract all favicon and app icon sizes with download links, format detection, and manifest.json analysis.

Favicon Forge

Generate complete favicon sets from any image, emoji, or text. Download as a ready-to-use package with HTML tags.

Favicon Generator

Generate favicons from text, emoji, or uploaded images. Creates all standard sizes and outputs the HTML link tags.

Favicon Generator

Generate multi-size favicons from any image — .ico, SVG, apple-touch-icon, web manifest icons.

Favicon Generator Multi

Upload an image and generate all favicon formats: ICO, SVG, Apple Touch, Android Chrome, MS Tile. Download as zip.

Favicon Generator Pro

Upload any image and generate a complete favicon set: ICO, 16/32/48px PNGs, Apple Touch icons, and webmanifest.

Favicon Generator Suite

Upload one image, generate all necessary favicon formats: ICO, PNG sizes, Apple Touch Icon, and web manifest entries.

Favicon Generator Tool

Generate favicons from text, emoji, or image upload — output ICO, PNG, SVG, and WebManifest.

Favicon Generator Web

Generate complete favicon set from a single image.

Favicon Multi Format Gen

Upload one image and generate all favicon formats — ICO, SVG, Apple Touch, Android Chrome, webmanifest — plus HTML snippet.

Favicon Multi Size Generator

A purely client-side web utility that takes a single high-resolution image upload and slices it into the standard suite of web app icons required for modern metadata .

Favicon Preview Tool

Upload a favicon to preview on 20+ browser tabs, bookmarks, and mobile home screens

Feature Flag Audit

Audit usage and staleness of feature flags.

Feature Flag Dashboard

A local-first feature flag management dashboard. Define, toggle, and manage feature flags for your dev/staging/production environments. Export configs as JSON, .env, or TypeScript constants.

Feature Flag Manager

Simple feature flag dashboard for small teams with LocalStorage persistence. Toggle features on/off without deployments.

Feature Flag Manager Local

A local-only feature flag management dashboard for developers who want to implement feature flags in their apps without a cloud service. Provides a UI to create, toggle, evaluate, and export feature f

Feature Flag Playground

Simulate feature flag configurations and user targeting rules with live preview.

Feature Flag Playground

Visual feature flag simulator. Define flags, user segments, and rollout percentages, then see how they resolve in real-time.

Feature Flag Simulator

Define feature flags in JSON and test all flag combinations with live preview panels.

Feedback Board

Public roadmap and feature voting platform for products

Fibonacci Generator

Generate Fibonacci sequence up to N.

Figlet Text Generator

Generate ASCII art text using FIGlet fonts with 50+ font options and customizable width/layout

Figma Token Converter

Paste Figma design tokens JSON and convert to CSS custom properties, SCSS variables, Tailwind config, or Style Dictionary format.

File Encryption Web

Encrypt and decrypt files client-side using AES-256 — files never leave the browser.

File Hash Calculator

Calculate MD5/SHA hashes of files entirely in browser.

File Hash Checker

Drop any file to instantly calculate SHA-256, SHA-1, MD5, and CRC32 hashes. Compare hashes to verify file integrity.

File Hash Verifier

Drag-and-drop file SHA256/MD5/SHA1 checker in the browser, no upload required.

File Hash Verifier

A secure, offline file integrity checker. Drag any file to compute SHA-256, SHA-1, MD5, and SHA-512 hashes instantly — then compare against expected hashes to verify downloads haven't been tampered wi

File Size Visualizer

Visualize file and folder sizes as a treemap — paste output from du or ls.

File System Access Editor

A browser-based local file editor using the File System Access API. Open, edit, and save real files from your browser.

Fingerprint Tester

See exactly what your browser reveals about you. Canvas, WebGL, audio fingerprinting explained.

Flashcard App

Create and study flashcards with spaced repetition.

Flashcard Maker

A local-first flashcard creation and study app with spaced repetition. Create decks of Q&A cards, study them with a smooth flip animation, and the app schedules reviews using a simplified SM-2 spaced

Flashcard Study App

Create and study flashcards with spaced repetition using the Leitner system. Study any subject with scientifically-proven memory techniques — all local, no sign-up.

Flexbox Cheatsheet

Interactive Flexbox cheatsheet with live playground for every property.

Flexbox Code Generator

Visual flexbox layout builder — arrange boxes with drag-and-drop, tweak every flex property, and copy the generated CSS plus HTML.

Flexbox Playground

Interactive CSS flexbox layout builder and learning tool

Flexbox Playground Advanced

Interactive flexbox sandbox with parent and child controls. Visual arrows showing flex direction, wrap, grow, shrink, and basis.

Flexbox Playground Interactive

Visual CSS Flexbox playground with draggable items and all property controls.

Flexbox Vs Grid Comparison

An educational web utility designed to answer the eternal question: "Should I use Grid or Flexbox for this?". It provides a side-by-side interactive playground comparing the exact same layout goal ach

Flowchart Maker

Browser-based drag-and-drop flowchart builder using SVG. Create professional diagrams with shapes, connectors, and labels. Export to SVG or PNG. No backend — everything runs client-side.

Focus Ambient Sounds

Mix ambient sounds with volume sliders and timer for focus sessions.

Focus Playlist

Ambient sounds and lo-fi beats player with built-in pomodoro timer, mixing controls, and session tracking.

Focus Timer Ambient

Pomodoro timer with customizable ambient sounds — rain, café, forest, ocean — for deep focus sessions with session tracking.

Font Comparison Tool

Choose or upload fonts and compare them side-by-side with custom text samples. Adjust size, weight, line-height, and letter-spacing to make informed typography decisions.

Font Fallback Tester

Compare web fonts against system fallback stacks, measure layout shift , and calculate size-adjust values for perfect fallback matching.

Font Pair Finder

Browse curated Google Font pairings with live preview and CSS export.

Font Pairing Explorer

Browse and preview curated font pairs from Google Fonts with live custom text.

Font Pairing Generator

AI-suggested Google Fonts pairings with live preview and typographic scale visualization

Font Pairing Playground

A minimalist typography tool for UI designers to test Google Fonts pairings in a live, realistic layout environment before writing CSS.

Font Pairing Studio

Discover harmonious font combinations with live preview. Browse curated Google Fonts pairings, adjust sizes, weights, and spacing, then export production-ready CSS.

Font Pairing Suggestion Engine

Find beautiful font pair combinations for your design projects. Browse curated pairs from Google Fonts, preview with your own text, and export as CSS/HTML link tags. Solve the "which fonts go together

Font Pairing Tool

A visual tool for finding beautiful font combinations. Browse curated pairs, preview with custom text, adjust sizes and weights, and export CSS.

Font Subsetter

Upload a font file, select character ranges, and download a subsetted WOFF2 font that's up to 90% smaller.

Font Subsetting Tool

Upload a font file and subset it by Unicode ranges with WOFF2 output

Font Tester

Preview and compare Google Fonts side by side. Built with Next.js 15.

Form Builder

Drag-and-drop form creator with submissions management

Fourier Transform Visualizer

An interactive, animated visualization of the Fourier Transform. Users draw a waveform or select presets , and the tool decomposes it into frequency components shown as rotating circles and a frequen

Freelance Dashboard

Dashboard for freelancers with income and time tracking. Built with Next.js 15.

Freelance Invoice Generator

Create beautiful, professional invoices with time tracking, tax calculation, and PDF export.

Freelance Project Tracker

A local-first CRM for freelancers to track leads, active projects, invoices, and client relationships. See your pipeline value, upcoming deadlines, and payment status at a glance — no subscription, no

Freelance Rate Calculator

A comprehensive freelance rate calculator. Input your desired annual income, expenses, vacation days, and billable hours to calculate your minimum viable hourly rate and project pricing.

Freelance Rate Calculator

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Freelance Time Audit

A local-first time tracker built for freelancers that tracks billable hours per project/client, visualizes time distribution, and calculates effective hourly rates. No accounts, no cloud — everything

Freelancer Income Dashboard

A financial dashboard built specifically for freelancers and consultants. Track income by client, project, and month. Calculate your effective hourly rate and tax withholding estimates.

Freelancer Invoice Gen

Generate professional invoices with line items, tax calculation, and PDF export without an account