All 62 status codes in the IANA HTTP Status Code Registry, from the common
(200, 404, 500) to the obscure (Multi-Status, I'm a Teapot). Search by code number, name, or
a keyword describing the problem, or filter by category. Each entry includes an RFC
reference, a plain-English explanation, common causes, and a typical fix. Runs entirely in
your browser; nothing you search is sent anywhere.
A note on scope
This covers every code in the official IANA registry, including WebDAV-specific ones
(207, 423, 507, ...) you'll rarely see outside a WebDAV server, and 418 (a preserved April
Fools' joke, not a real error). Some frameworks and platforms return additional
non-standard codes of their own — those aren't covered here since they're not part of the
IANA registry.