HTTP Status Codes Reference
Look up what any HTTP status code means.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Searchable reference of HTTP status codes from 100 to 599, with the official name, a plain explanation, when a server should send it and the SEO impact of the common redirects and errors. Search by number or keyword.
How to use it
- Type a code such as 404, a class such as 3xx, or a word such as redirect.
- Press Search.
- Read the meaning and when it is used.
Frequently asked questions
301 or 302 for a moved page?
Use 301 (or 308) for a permanent move so search engines transfer rankings; 302 (or 307) only for temporary changes.
Is a soft 404 a problem?
Yes. A missing page that answers 200 wastes crawl budget and confuses search engines; return a real 404 or 410.
Keep going
Related tools
URL Status Checker
Check HTTP status codes for up to five URLs at once.
HTTP Header Inspector
Read response headers, status and redirect chain for a URL.
MIME Type Lookup
Find the MIME type for a file extension, or the reverse.
QR Code Generator
Create a QR code for any text or URL, with SVG and PNG export.
URL QR Code Generator
Turn a link into a QR code with a validation step.
Wi-Fi QR Code Generator
Let guests join your network by scanning a code.