🔐
JWT Debugger
Decode & validate JWTs offline — zero data leaves your machine
🔍 Decode
🔨 Builder
⚖ Compare
📥 Paste JWT
⎘ Paste
✕
⬡ Share
Signature Verification
Base64 encoded
Verify
■ Header
⎘ Copy
■ Payload
⎘ Copy
■ Signature
📋 Header
{"alg": "HS256", "typ": "JWT"}
📦 Payload
+ Claim
{"sub": "1234567890", "name": "Alice", "iat": 1516239022, "exp": 9516239022}
Quick claims:
exp (1h)
iat (now)
nbf (now)
jti (uuid)
🔑 Secret
⚡ Generate JWT
🔑 Generated Token
⎘ Copy
Click "Generate JWT" to build a token
Token A
Token B
⚖ Diff
Paste two tokens to compare