Look under the hood of an HTTP response — caching rules, security policy, compression, server fingerprint, and redirects — in a searchable, explained table.
GET
Browsers only expose a limited set of headers for cross-origin requests. Switch to “Paste headers” for a full, offline view.
One header per line, formatted as Name: value. Works fully offline.
Advanced: use a CORS proxy for fetch mode
Left empty by default. If set, requests go to prefix + your URL instead of the URL directly. Only use a proxy you trust.