HTTP Status Code Lookup
Look up what any HTTP status code means, from 200 OK and 301 redirects to 404, 429 and 503, with practical notes for debugging.
Runs on your device
Result
Results appear here as you type.
What it does
Type a code or a word like "redirect" to filter. Each entry explains the code in plain English, following RFC 9110.
How to use it
- Type a status code or keyword.
- Read the meaning.
- Use the notes to debug your request.
Example
The example fills in realistic values and runs the tool. Select Try an example above to see it.
When it helps
- Debugging APIs.
- SEO redirect checks.
- Learning web development.
Questions
401 or 403?
401 means not authenticated (log in); 403 means authenticated but not allowed.
301 or 308?
Both are permanent; 308 guarantees the method and body are kept on POST.
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