HTTP•Runs on Request
HTTP Status Checker
Comprehensive catalog of all HTTP status codes (1xx, 2xx, 3xx, 4xx, 5xx) with RFC definitions and troubleshooting.
Developer workbench
⌘ / Ctrl + Enter to runConfigure. Run. Inspect.
Requests run only when you click Run. Browser CORS restrictions apply; remote responses are never simulated.
3 input bytes
Output
How to Use HTTP Status Checker
01
Type any code (e.g. 404, 502, 301) into search.
02
Read description, common causes, and recommended developer fixes.
03
Browse by categories (1xx Informational, 2xx Success, 3xx Redirection, 4xx Client Error, 5xx Server Error).
Frequently Asked Questions
What is the difference between 301 and 302?
301 indicates a Permanent Redirect cached by browsers and search engines, while 302 is Temporary.
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