CORS Checker

Test cross-origin access to any URL

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About CORS Checker

Test any URL for CORS compatibility by sending a cross-origin request directly from your browser. Displays Access-Control-Allow-Origin, allowed methods, headers, credentials support, and max-age values. Essential for API developers working with frontend applications.

CORS Checker Features

  • Live CORS testing
  • Full header display
  • Origin/methods/credentials
  • Instant browser check

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