API & Network

API Request Tester

Send HTTP requests from your browser.

100% browser No upload Free forever

Headers (one per line, Name: value) Body (for POST/PUT/PATCH)

Status

Response headers

Response body

Common questions

FAQ

1 CORS errors?

Browser security blocks cross-origin requests unless the target API allows your origin. Use server-side tooling (curl, httpie) for those endpoints.

2 Are credentials saved?

No. Headers and bodies live only in this page until you reload.

Inspect response headers of any URL.

Look up your public IP and basic info.

Parse a UA string into browser/OS/device.

Resolve A, AAAA, MX, TXT records via DoH.

Convert a cURL command to fetch() code.