Do requests pass through your servers?

No. fetch() executes from your browser to the target origin. Our servers never see your URLs, headers, or tokens.

Why do some APIs fail with CORS errors?

Browsers block cross-origin reads unless the API returns CORS headers. That is the API's policy, not this tool — try an API with CORS enabled.

Only in localStorage history on your device if you save the request. Clear history anytime; nothing is synced remotely.

Yes. Use POST with a JSON body containing query and variables against the GraphQL HTTP endpoint.

Interactive web sandbox to write, preview, and test HTML5, CSS3, and JavaScript in an isolated browser environment.

Convert cURL commands to JavaScript Fetch, Axios, Python Requests, Go, Rust, and PHP.

Break down URLs into protocol, hostname, port, pathname, hash, and interactive query parameters.

Format, beautify, validate, and inspect JSON payloads with line-accurate error highlighting.

The browser connects to a specified external endpoint to complete the task. No payload or credential is sent to or stored on FileXShare servers.