HTTP status codes

61 codes

• 100

  Continue

  1xx

  Server received the headers and is ready for the request body.

• 101

  Switching Protocols

  1xx

  Server agreed to switch protocols (e.g. WebSocket).

• 102

  Processing

  1xx

  Server is still processing — prevents timeouts on long operations.

• 103

  Early Hints

  1xx

  Hints the browser to preload resources while the full response is prepared.

• 200

  OK

  2xx

  Request succeeded. The code you want to see.

• 201

  Created

  2xx

  Resource created (common after POST/PUT).

• 202

  Accepted

  2xx

  Accepted but not yet processed (async).

• 203

  Non-Authoritative Information

  2xx

  Success, but a proxy modified the response.

• 204

  No Content

  2xx

  Success with no response body (e.g. delete).

• 205

  Reset Content

  2xx

  Success — client should reset the document view/form.

• 206

  Partial Content

  2xx

  Partial content (Range) — downloads and streaming.

• 207

  Multi-Status

  2xx

  Multiple statuses in one response (WebDAV).

• 208

  Already Reported

  2xx

  Already reported in Multi-Status (avoids DAV duplicates).

• 226

  IM Used

  2xx

  GET with instance manipulations applied.

• 300

  Multiple Choices

  3xx

  Multiple options — client needs to choose one.

• 301

  Moved Permanently

  3xx

  URL permanently moved (good for SEO).

• 302

  Found

  3xx

  Temporary redirect. Keep using the original URL later.

• 303

  See Other

  3xx

  See another resource via GET (e.g. after POST).

• 304

  Not Modified

  3xx

  Not modified — use the cache. Saves bandwidth.

• 307

  Temporary Redirect

  3xx

  Temporary redirect keeping the same HTTP method.

• 308

  Permanent Redirect

  3xx

  Permanent redirect keeping the same HTTP method.

• 400

  Bad Request

  4xx

  Invalid request (syntax, parameters, etc.).

• 401

  Unauthorized

  4xx

  Missing or invalid authentication. Sign in.

• 402

  Payment Required

  4xx

  Reserved for payment systems — rarely used.

• 403

  Forbidden

  4xx

  No permission. Re-auth usually will not help.

• 404

  Not Found

  4xx

  Resource not found. Broken link or wrong URL.

• 405

  Method Not Allowed

  4xx

  HTTP method not allowed for this resource.

• 406

  Not Acceptable

  4xx

  No content matches the Accept headers.

• 407

  Proxy Authentication Required

  4xx

  Authenticate with the proxy (not the origin).

• 408

  Request Timeout

  4xx

  Server did not receive the full request in time.

• 409

  Conflict

  4xx

  Conflict with the current resource state.

• 410

  Gone

  4xx

  Resource permanently removed.

• 411

  Length Required

  4xx

  Content-Length header is required.

• 412

  Precondition Failed

  4xx

  Request preconditions were not met.

• 413

  Payload Too Large

  4xx

  Request payload is too large.

• 414

  URI Too Long

  4xx

  URI is longer than the server accepts.

• 415

  Unsupported Media Type

  4xx

  Unsupported media type.

• 416

  Range Not Satisfiable

  4xx

  Requested range is invalid or outside the resource.

• 417

  Expectation Failed

  4xx

  Expect header could not be satisfied.

• 418

  I'm a Teapot

  4xx

  Easter egg (April Fools). Server is a teapot.

• 421

  Misdirected Request

  4xx

  Request was sent to the wrong server.

• 422

  Unprocessable Entity

  4xx

  Syntax OK, but semantic/validation errors.

• 423

  Locked

  4xx

  Resource is locked (WebDAV).

• 424

  Failed Dependency

  4xx

  Failed because a previous dependency failed.

• 425

  Too Early

  4xx

  Server refuses to process (replay risk).

• 426

  Upgrade Required

  4xx

  Client must switch protocols (Upgrade).

• 428

  Precondition Required

  4xx

  Server requires a conditional request.

• 429

  Too Many Requests

  4xx

  Rate limited — too many requests in a short time.

• 431

  Request Header Fields Too Large

  4xx

  Request headers are too large.

• 451

  Unavailable For Legal Reasons

  4xx

  Unavailable for legal reasons.

• 500

  Internal Server Error

  5xx

  Generic server error. Hosting-side problem.

• 501

  Not Implemented

  5xx

  Functionality not implemented by the server.

• 502

  Bad Gateway

  5xx

  Gateway/proxy got an invalid upstream response.

• 503

  Service Unavailable

  5xx

  Service unavailable (maintenance or overload).

• 504

  Gateway Timeout

  5xx

  Gateway/proxy timed out waiting for upstream.

• 505

  HTTP Version Not Supported

  5xx

  HTTP version used in the request is not supported.

• 506

  Variant Also Negotiates

  5xx

  Content negotiation configuration error.

• 507

  Insufficient Storage

  5xx

  Not enough storage on the server.

• 508

  Loop Detected

  5xx

  Infinite loop detected — operation stopped.

• 510

  Not Extended

  5xx

  Further extensions are required.

• 511

  Network Authentication Required

  5xx

  Network authentication required (e.g. captive portal).