What is an HTTP header and why should I check them?

HTTP headers are metadata sent by web servers that control how browsers handle content, cache pages, and enforce security policies. Checking headers helps identify security vulnerabilities, performance issues, and misconfigurations that could harm your website's functionality and user experience.

How do I check if my website has security headers?

Use the HTTP Headers Checker tool by entering your website URL and analyzing the results. Look for security headers like Content-Security-Policy, X-Frame-Options, Strict-Transport-Security (HSTS), and X-Content-Type-Options. If these are missing, your site may be vulnerable to common web attacks.

What does the Cache-Control header do?

The Cache-Control header tells browsers and intermediary servers how long to cache content and whether caching is allowed at all. Proper Cache-Control configuration reduces server load, improves page load times, and enhances user experience by serving cached content instead of making new requests.

Can I see redirect chains with this tool?

Yes, the HTTP Headers Checker tracks redirect chains by analyzing Location headers and HTTP status codes (301, 302, 307, 308). This helps identify unnecessary redirects that slow down your website and waste bandwidth. Ideally, you should minimize the number of redirects in your redirect chain.

Is it safe to check headers of other websites?

Yes, checking HTTP headers of any website is completely safe and legal. HTTP headers are public information sent by web servers to all clients. This tool only reads publicly available header information and doesn't modify, hack, or access any private data from the target website.

HTTP Headers Checker

How to Use HTTP Headers Checker

When to Use HTTP Headers Checker

Technical Information

Frequently Asked Questions