HTTP Status & MIME Reference
Look up any HTTP status code and common MIME (content) type in one place. Search by number, name, or extension — instant and offline.
About HTTP status codes & MIME types
HTTP status codes are three-digit numbers a server returns to describe the result of a request — 200 OK, 404 Not Found, 500 Internal Server Error, and so on. MIME types (like application/json or image/png) tell the browser what kind of content it received. This reference bundles the standard codes and the most common MIME types so you can look them up without leaving your editor.