HTTP Headers Checker
Analyze HTTP response headers, check security configurations, and verify caching...Analyze HTTP response headers, check security configurations, and verify caching policies. Get instant header analysis with security score.
Press Ctrl+Enter to analyze.
Custom Request Headers (optional)
One header per line in "Key: Value" format
Security Analysis
Automatically checks for critical security headers like CSP, HSTS, X-Frame-Options, and more with a scored assessment.
Categorized View
Headers are organized into Security, Caching, Content, Server, and Custom categories for quick analysis.
Response Timing
Measures real response time to help you understand server performance and identify bottlenecks.
Header Explanations
Click any header row to reveal a plain-English description of what the header does and why it matters.
Checker Features
Why Use HTTP Headers Checker?
Security Analysis
Get a security score and recommendations for improving your HTTP security headers.
Categorized Headers
Headers organized by category: Security, Caching, Content, Connection, and Misc for easy understanding.
Easy to Understand
Clear explanations for each header and plain-language recommendations for improvements.
100% Free
No signup, no limits, no fees. Check headers for unlimited URLs completely free.
Common Use Cases
Security Audits
Verify that your website has proper security headers configured to protect against common attacks.
Debugging
Debug issues with caching, CORS, content types, and other HTTP-related problems.
Performance Optimization
Check caching headers to ensure optimal browser caching and CDN configuration.
Compliance Verification
Verify HTTP headers meet security standards and compliance requirements for your organization.
How It Works
Enter URL
Type the URL you want to analyze. Include https:// or we will add it for you.
Check Headers
Click the button to fetch and analyze all HTTP response headers from the server.
Review Analysis
View your security score, check for issues, and follow recommendations to improve your headers.
HTTP Headers Tips
Start with Security Headers
Focus on adding HSTS, CSP, and X-Frame-Options first - they provide the most security benefit.
Test After Changes
Re-check headers after making server configuration changes to verify they take effect properly.
Hide Server Info
Remove or obfuscate Server and X-Powered-By headers to reduce information disclosure to attackers.