CORS
Tester
Diagnose Cross-Origin Resource Sharing configurations
Request Configuration
Method
GET
POST
PUT
DELETE
PATCH
OPTIONS
Target API URL
Note on Origin:
Browsers do not allow overriding the
Origin
header in fetch requests for security reasons. This tool sends requests from
this application's origin
. To fully simulate another origin, use a CLI tool or extension.
Custom Request Headers
+ Add Header
Test CORS Configuration
Preflight (OPTIONS)
Pending
Response Headers
View
Actual Request (GET)
Pending
Fix Suggestions
Response Headers
View