TOOL 22 / BROWSER-SIDE
HTTP Reference Lookup
Search statuses, headers and MIME types. No uploads, no backend.
FREE TO USE / NO ADS / NO LOGIN REQUIRED
Look up HTTP status codes, headers and MIME types
Find a quick explanation of a response status, header or media type. Use the searchable reference while investigating an API or browser response.
- Search HTTP status code meanings
- Look up common HTTP headers
- Find MIME and content types
Search for a code, header name or MIME type and read the matching reference entry. Use the explanation as a starting point; the correct fix still depends on your server and request context.
Popular ways to use HTTP Status / Header / MIME Lookup
- Look up the meaning of an HTTP status during debugging.
- Check a common response header or MIME type quickly.
How processing and privacy work
Processing runs in your browser. The page may download scripts, fonts or processing engines to run the tool; these downloads are separate from uploading your input files.