HTTP Header Checker
Check HTTP response headers online instantly. Analyze security headers, cache headers, server details, redirects and SEO-related HTTP configurations.
Last updated: 2026-05-20
Free Online HTTP Header Checker
Use this free online http header checker tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
HTTP Header Checker
Analyze HTTP response headers, security policies, caching configurations and SEO-related server responses instantly.
Raw Headers
Parsed Headers
| Header | Value |
|---|---|
| Content-Type | text/html; charset=UTF-8 |
| Cache-Control | public, max-age=3600 |
| Server | cloudflare |
| Strict-Transport-Security | max-age=31536000 |
| X-Frame-Options | SAMEORIGIN |
| X-Content-Type-Options | nosniff |
| Referrer-Policy | strict-origin-when-cross-origin |
Security Header Analysis
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About This Tool
About HTTP Header Checker
This free online HTTP Header Checker helps analyze website response headers, security configurations, caching policies and server information instantly.
Useful for developers, SEO professionals, DevOps engineers and security audits.
What This Tool Supports
- HTTP response header analysis
- Security header validation
- Cache-Control inspection
- CORS header checking
- Redirect detection
- Server information analysis
- SEO-related header checks
- Content-Type validation
- HTTP status code analysis
- Responsive developer UI
Frequently Asked Questions
What are HTTP headers?
HTTP headers are metadata sent between browsers and servers containing information about requests, responses, caching, security and content handling.
Why are security headers important?
Security headers help protect websites against attacks like XSS, clickjacking and content injection vulnerabilities.
Can this tool detect redirects?
Yes. The tool helps identify redirect chains and HTTP status responses.
Does this tool check cache headers?
Yes. It can analyze Cache-Control, Expires and related caching headers.
Is this HTTP Header Checker free?
Yes. This tool is completely free to use online.
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