HTTP Status Checker
Check HTTP status codes, response headers, security headers, and performance for any URL.
Free & unlimited
Quick test
Processed on our servers and deleted right after. Never stored or shared.
About this tool
- 1
Enter a URL
Type or paste the full URL you want to check, including the protocol (http:// or https://).
- 2
Send the request
Click Check to send an HTTP request and retrieve the status code, headers, and response details.
- 3
Review the response
See the HTTP status code with a plain-English explanation, response headers, and redirect chain if applicable.
- 4
Diagnose issues
Use the detailed header information and redirect path to troubleshoot connectivity or configuration problems.
- Check redirect chains (301/302) to ensure they resolve in three hops or fewer - long chains slow down crawling and page load.
- Verify that HTTP URLs redirect to HTTPS with a 301 (permanent) redirect, not a 302 (temporary).
- Look for missing security headers like Strict-Transport-Security, X-Content-Type-Options, and X-Frame-Options.
- Test URLs with and without "www" to confirm both versions resolve correctly.
- HTTP status code lookup with detailed explanations for all standard codes
- Full response header inspection including caching and security headers
- Redirect chain tracing showing every hop from origin to final destination
- Response time measurement in milliseconds
- Support for HEAD and GET request methods
- Verify that 301 redirects are properly configured after a site migration
- Check if a page returns a 404 error or a soft 404 with a 200 status
- Inspect caching headers to debug CDN or browser caching issues
- Monitor API endpoint availability and response codes
A 301 is permanent - search engines transfer ranking signals to the new URL. A 302 is temporary - search engines keep the original URL indexed. Use 301 for permanent moves.
A 200 status means the server responded successfully, but the page may have a noindex tag, be blocked by robots.txt, or have thin/duplicate content issues.
The server understood the request but refuses to authorize it. This usually means the resource requires authentication or your IP is blocked by the server firewall.