Server Headers Analyzer
Inspect HTTP response headers to verify security configurations, caching policies, and server details. Identify missing security headers like HSTS, CSP, and X-Frame-Options.
Analyze Headers
What are Server Headers?
HTTP response headers are metadata sent by a web server to a browser when a web page is requested. They contain essential information about the server software, the type of content being delivered, how long it should be cached, and what security protocols should be enforced. Understanding these headers is critical for both SEO and cybersecurity.
- Security: Enforce HTTPS, prevent Clickjacking, and mitigate XSS attacks.
- Caching: Optimize performance by telling browsers how to store resources.
- Identity: Indicate the web server technology being used.
Why Header Analysis Matters
Missing or misconfigured headers can leave your website vulnerable to common exploits and negatively impact your page load speed. Modern browsers rely on these headers to understand the boundaries of your web application's security sandbox.
"A secure website isn't just about SSL. HTTP Security Headers represent the frontline defense that many site owners overlook, yet they are among the easiest vulnerabilities to fix."
Best Practices
For a robust and performant website, we recommend following these industry standards for header configuration:
- Hide Server Version: Disable the
ServerandX-Powered-Byheaders to prevent attackers from footprinting your infrastructure. - Enforce HTTPS: Always include the
Strict-Transport-Security(HSTS) header to force secure connections. - Implement CSP: Use a
Content-Security-Policyto restrict where scripts and styles can be loaded from. - Zero Cache for Sensitive Data: Ensure private data includes
Cache-Control: no-storeto prevent it from being stored in shared caches.
How to Use This Tool
Enter a website URL and click "Analyze". We will perform a deep scan of the response headers returned by the server. We'll categorize them into Security and Performance sections, flagging any critical missing headers and providing the raw output for advanced debugging.
Frequently Asked Questions
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