HTTP Status Code Lookup
Developer ToolsMeaning of every HTTP status code
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All history →HTTP Status Code Lookup — at a glance
Find out what a status code like 404 or 301 really means, with plain-English explanations.
404
Run
Not Found
The page does not exist.
How to use it — step by step
A code number or a keyword. Leave it empty to see the full list.
1
Paste your input
Paste or type your content into the big input box.
2
Look Up
Press the button. The result is created instantly on your device.
3
Copy the result
Check the output and press Copy to use it anywhere.
Pro tips
Small things that make the result better.
✦1xx info, 2xx success, 3xx redirect, 4xx client error, 5xx server error.
✦Use 301 for permanent moves and 302/307 for temporary ones.
✦Search words like “timeout” or “redirect”.
Quick facts
30+ codesmost common ones
Searchby number or word
5 groups1xx–5xx
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Frequently Asked Questions
What is a 404 error?+
The server could not find the page you asked for — often a broken or mistyped link.
301 vs 302?+
301 is permanent and passes SEO value to the new URL; 302 is temporary.
What causes a 500 error?+
An unexpected problem on the server, like a bug or a crashed service.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
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