developer5 sections · 33 items

HTTP Status Codes Reference Cheat Sheet

Complete HTTP response status code reference organized by class: 1xx informational, 2xx success, 3xx redirection, 4xx client errors, and 5xx server errors.

1xx Informational

Item	Value	Notes
100	Continue	Server received headers, client should send body
101	Switching Protocols	Upgrading to WebSocket
102	Processing	WebDAV; request received, still processing
103	Early Hints	Preload resources while server prepares response

2xx Success

Item	Value	Notes
200	OK	Standard success response
201	Created	Resource successfully created (POST)
202	Accepted	Request accepted, processing not complete
204	No Content	Success but no body returned (DELETE)
206	Partial Content	Range request fulfilled
207	Multi-Status	WebDAV; multiple status codes

3xx Redirection

Item	Value	Notes
301	Moved Permanently	URL changed permanently; update bookmarks
302	Found	Temporary redirect (often misused)
303	See Other	Redirect to GET after POST
304	Not Modified	Cached version is still valid
307	Temporary Redirect	Like 302 but preserves HTTP method
308	Permanent Redirect	Like 301 but preserves HTTP method

4xx Client Errors

Item	Value	Notes
400	Bad Request	Malformed syntax, invalid params
401	Unauthorized	Authentication required
403	Forbidden	Authenticated but not authorized
404	Not Found	Resource does not exist
405	Method Not Allowed	Wrong HTTP method for endpoint
408	Request Timeout	Server timed out waiting for request
409	Conflict	Request conflicts with current state
413	Payload Too Large	Request body exceeds server limit
422	Unprocessable Entity	Valid syntax but semantic errors
429	Too Many Requests	Rate limit exceeded

5xx Server Errors

Item	Value	Notes
500	Internal Server Error	Generic server-side failure
501	Not Implemented	Server does not support the method
502	Bad Gateway	Invalid response from upstream server
503	Service Unavailable	Server overloaded or in maintenance
504	Gateway Timeout	Upstream server did not respond in time
507	Insufficient Storage	WebDAV; server cannot store the data
508	Loop Detected	WebDAV; infinite loop in processing

Tip: Use landscape orientation for wider tables

Related Tools

JSON Formatter

Format, validate, and beautify JSON data

JWT Decoder

Decode and inspect JSON Web Tokens

Base64 Encoder/Decoder

Encode and decode Base64 strings

URL Encoder/Decoder

Encode and decode URL strings

Stay Updated

Get notified about new tools, features, and exclusive deals. No spam, ever.

Browse All Cheat Sheets →