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HTTP Status Code Reference – All 1xx–5xx Codes with Descriptions & Use Cases

HTTP Status Code Reference

A complete, searchable reference for every HTTP status code — built as a browser tool at devnestio.pages.dev/http-status-ref/.

Features

  • 60+ status codes across all five categories
  • Filter by category — 1xx / 2xx / 3xx / 4xx / 5xx
  • Search by code, name, or description
  • Real-world use cases for every code
  • One-click copy of any status code number
  • Color-coded by category for quick scanning

Codes Covered

1xx Informational

100 Continue, 101 Switching Protocols, 102 Processing, 103 Early Hints

2xx Success

200 OK, 201 Created, 202 Accepted, 204 No Content, 206 Partial Content, 207 Multi-Status

3xx Redirection

301 Moved Permanently, 302 Found, 303 See Other, 304 Not Modified, 307 Temporary Redirect, 308 Permanent Redirect

4xx Client Errors

400 Bad Request, 401 Unauthorized, 403 Forbidden, 404 Not Found, 409 Conflict, 418 Teapot, 422 Unprocessable, 429 Too Many Requests, 451 Legal Reasons, and more

5xx Server Errors

500 Internal Server Error, 502 Bad Gateway, 503 Service Unavailable, 504 Gateway Timeout, and more

Try It

devnestio.pages.dev/http-status-ref/

Vanilla JS, instant load, dark theme. No frameworks required.


Part of the DevNestio developer tools collection.

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