HTTP Headers Checker
NetworkInspect HTTP response headers for any URL — check security headers, status codes, caching and more.
Enter the full URL including https://
About the HTTP Headers Checker
Inspect HTTP response headers for any URL — check security headers, status codes, caching and more. TrendPro's HTTP Headers Checker is completely free to use with no account or sign-up required. Your data is processed directly in your browser and is never sent to any server or stored anywhere.
How to Use the HTTP Headers Checker
- 1
Enter the full URL you want to inspect — e.g. https://example.com or https://yourwebsite.com/page.
- 2
Click Check Headers to send a request and retrieve the response headers.
- 3
View the HTTP status code and all response headers.
- 4
Check the Security Headers section — missing security headers are highlighted in red.
- 5
Copy any header value by clicking the copy icon next to it.
Frequently Asked Questions
What are HTTP headers?
HTTP headers are metadata sent between a web server and browser with every request and response. They contain information about the content type, caching rules, security policies, cookies, and much more. They are invisible to regular users but crucial for web developers.
What is the Content-Security-Policy header?
The Content-Security-Policy (CSP) header tells browsers which sources of content (scripts, images, styles) are trusted for your website. It is one of the most powerful defences against Cross-Site Scripting (XSS) attacks.
What does HSTS mean?
HSTS (HTTP Strict Transport Security) is a security header that forces browsers to always connect to your website over HTTPS. Once a browser has seen the HSTS header, it will refuse any HTTP connections to your domain for the specified duration.
What is X-Frame-Options?
The X-Frame-Options header prevents your website from being embedded in an iframe on another website. This protects against clickjacking attacks where an attacker overlays an invisible iframe over a legitimate page to steal clicks.
How is the security score calculated?
The security score shows what percentage of the recommended security headers are present in the response. A score of 100% means all 7 recommended security headers are set. Missing headers represent potential security vulnerabilities.
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