HTTP Headers Checker
Free HTTP headers checker — inspect all response headers for any URL. Check cache-control, content-type, server info, and custom headers returned by your site.
Frequently Asked Questions
What are HTTP response headers?
HTTP response headers are metadata sent by the server with every response. They control caching, security, content type, encoding, and other browser behaviors. Common headers include Cache-Control, Content-Type, and Server.
Which HTTP headers matter for performance?
Cache-Control and ETag headers enable browser caching. Content-Encoding (gzip/br) enables compression. Connection: keep-alive reduces connection overhead. These headers significantly impact page load speed.
Should I hide the Server header?
Hiding or changing the Server header (which reveals your web server software) is a minor security measure. It prevents attackers from easily identifying your server version to exploit known vulnerabilities.