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CORS Header Generator

Generate Cross-Origin Resource Sharing headers. Configure allowed origins, methods and headers.

Live·100% in your browser — no upload
Comma-separated. Use * for all origins.

How CORS Header Generator works

Generate Cross-Origin Resource Sharing headers. Configure allowed origins, methods and headers. Everything runs locally in your browser — nothing is sent to external servers.

  1. Enter or paste your data in the field above.
  2. The tool processes the result instantly, while your data stays on your device.
  3. Copy or download the output.

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