HTTP Status Code Lookup
Searchable HTTP status reference: 26 codes with plain-English meanings and what to do about each. 2xx–5xx.
HTTP status lookup (26)
200OKRequest succeeded.
201CreatedResource created, often returns Location.
204No ContentSuccess with empty body (DELETE, PUT).
206Partial ContentRange request fulfilled (video seeks).
301Moved PermanentlyResource moved; update bookmarks/SEO.
302FoundTemporary redirect, method may change to GET.
304Not ModifiedCached copy still fresh (ETag/Last-Modified).
307Temporary RedirectRedirect that preserves method + body.
308Permanent RedirectLike 301 but preserves method + body.
400Bad RequestMalformed syntax or validation failed.
401UnauthorizedMissing/invalid credentials — log in first.
403ForbiddenAuthenticated but not allowed (or hiding 404).
404Not FoundNo resource at this URL.
405Method Not AllowedWrong HTTP verb for this endpoint.
408Request TimeoutClient too slow sending the request.
409ConflictState conflict (duplicate, version mismatch).
410GonePermanently deleted — de-index, unlike 404.
413Content Too LargePayload over the server limit.
415Unsupported Media TypeWrong Content-Type for this endpoint.
422Unprocessable ContentValid JSON, failed semantic validation.
429Too Many RequestsRate limited — back off, respect Retry-After.
451Unavailable For Legal ReasonsBlocked by law/takedown.
500Internal Server ErrorUnhandled exception server-side.
502Bad GatewayUpstream/proxy got an invalid response.
503Service UnavailableOverloaded or deploying — retry later.
504Gateway TimeoutUpstream too slow behind the proxy.
How to use
- Paste input or drop a file above.
- Adjust options (delimiter, dialect, quality, ratio).
- Copy result or download — no sign-up needed.
FAQ
404 vs 410?
404 = not found (maybe temporary). 410 = gone forever — search engines de-index faster.
301 vs 308?
Both permanent, but 308 preserves method+body where 301 may flip POST to GET.