UnQTools
Developer Runs in your browser

CORS Tester & Config Generator

Generate CORS headers. Preflight simulator. Server config for Nginx/Apache/Express/Cloudflare.

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This preview template is being upgraded with extra features — 100% local, zero network requests.

Generate CORS headers. Preflight simulator. Server config for Nginx/Apache/Express/Cloudflare. Everything runs locally in your browser — your data never leaves your device.

How to use

  1. Enter your input in the tool above.
  2. Adjust any options to your preference.
  3. Use the Copy or Download buttons to save the result.
  4. Everything happens locally — your data never leaves your browser.
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