CORS Tester

CORS (Cross-Origin Resource Sharing) is a security mechanism that allows or restricts web pages from making requests to a different domain. Browsers block cross-origin requests by default unless the server includes the appropriate Access-Control headers in its response.

Configure your server to include the correct Access-Control-Allow-Origin header. For development, you can use a wildcard (*), but in production, specify exact origins. Also set Access-Control-Allow-Methods and Access-Control-Allow-Headers as needed.

Yes, completely free with no signup required. Enter a URL and origin to test CORS configuration and see which headers are returned.

Dewx provides secure API integrations with proper CORS handling, webhook management, and developer tools in the platform for seamless third-party connectivity.