HTTP Headers Checker
Inspect HTTP response headers, status codes, redirects, caching, content type, and security headers for any public website URL.
About HTTP Headers Checker
HTTP headers are metadata sent with every web response. They describe content type, caching behavior, redirects, compression, cookies, security policies, server behavior, and browser rules.
This checker fetches the public URL from the server side, follows redirects, and reports the final response headers so developers, SEO teams, and site owners can debug configuration quickly.
Private URL protection
The checker blocks localhost, private IPs, and internal hostnames. It is intended for public HTTP and HTTPS URLs only.
What to Check
Security headers
- Strict-Transport-Security forces browsers to use HTTPS.
- Content-Security-Policy reduces script injection and content loading risk.
- X-Frame-Options helps prevent clickjacking.
- Referrer-Policy controls how much URL data is sent to other sites.
Performance and SEO headers
- Cache-Control and Expires affect browser and CDN caching.
- Content-Type tells browsers how to interpret the response.
- Content-Encoding shows gzip, Brotli, or other compression.
- Location reveals redirect targets and canonical routing issues.
Common Uses
Debug redirects
Check whether HTTP redirects to HTTPS, whether non-www redirects to www, and whether redirect chains are longer than expected.
Audit security policy
Verify that key security headers are present before launch or after CDN, proxy, or hosting changes.
Inspect caching
Review cache headers to understand why a page, asset, API response, or CDN edge cache is stale or refreshing too often.