Build and send HTTP requests in this tab. No proxy — browser CORS rules apply.
Browser tool, not a proxy.
Requests use your browser’s fetch. Cross-origin APIs must allow this origin with CORS headers.
You cannot set forbidden headers (e.g. Cookie), and this page does not reuse logged-in sessions on other sites.
HTTPS pages cannot call plain http:// (mixed content). “Failed to fetch” is usually CORS, TLS, DNS, or network — not a bug here.
For terminal requests, use Copy as cURL or the curl builder.
Request + response
Request
Text and file fields via browser FormData. CORS and size limits still apply.