HTTP Status Code Reference
A complete, searchable reference of HTTP status codes with their plain-English meaning and when each is used. Filter by code or keyword, and check the category of any status number instantly.
How to Use
Type a code, a phrase like "not found", or pick a category. The table filters live. You can also enter any number to see which class (1xx to 5xx) it belongs to.
- All standard 1xx to 5xx status codes
- Search by number or meaning
- Filter by response category
- Plain-English descriptions
- Runs entirely in your browser
The five classes
1xx responses are informational, 2xx mean success, 3xx are redirects, 4xx are client errors, and 5xx are server errors. Knowing the class tells you whether the problem is on the client or the server.
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