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HTTP Status Code Reference & Tester
Look up and test HTTP status codes and headers.
Zero Server Storage: All computation and file conversion runs 100% locally in your browser memory.
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Operating Manual
3-STEP WORKFLOW01
Search or filter by status code (e.g. 200, 301, 302, 404, 410, 500, 503).
02
Read the clear explanation, technical definition, and SEO impact for each code.
03
Copy status descriptions directly into developer notes.
About This Tool
INFORMATIONFast reference directory of all 1xx, 2xx, 3xx, 4xx, and 5xx HTTP status codes with SEO implications and quick lookup.
This tool processes your input locally in your web browser. Your files, texts, and data never leave your device, ensuring total privacy and instant results with zero wait times.
Frequently Asked Questions
What is the SEO difference between 301 and 302 redirects?
A 301 is a permanent redirect that passes SEO ranking equity (link juice), while a 302 is temporary and does not transfer canonical equity.