How to Use HTTP Status Codes Reference
Search and look up what every HTTP status code means (200, 301, 404, 500…).
Open the HTTP Status Codes Reference tool →What is HTTP Status Codes Reference?
Search and look up what every HTTP status code means (200, 301, 404, 500…). It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use HTTP Status Codes Reference
- Open the HTTP Status Codes Reference tool.
- Paste or type your input.
- Set any options provided.
- Copy the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
What do the code ranges mean?
2xx = success, 3xx = redirects, 4xx = client errors (your request), 5xx = server errors. Search any code for its exact meaning.
What's the difference between 401 and 403?
401 Unauthorized means you're not authenticated (missing or invalid credentials); 403 Forbidden means you're authenticated but not allowed to access it.
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Open HTTP Status Codes Reference →