HTTP Header Viewer

Analyze HTTP headers from any URL with comprehensive debugging capabilities including security auditing, performance insights, server fingerprinting, and header categorization for web development and security analysis. This analysis tool provides header examination, security vulnerability identification, caching policy analysis, performance metrics, and detailed explanations with categorized presentation. Perfect for developers and security professionals conducting web application debugging, security audits, and performance optimization requiring thorough header analysis and security assessment.
Security Auditing Performance Insights Server Fingerprinting Header Categorization
Quick Examples 
SECURITY: X-Frame-Options: DENY
CACHE: Cache-Control: max-age=3600
SERVER: Server: nginx/1.18.0
Request Configuration
Enter any URL to analyze its HTTP response headers
Enable if you encounter CORS errors
Custom Headers
Quick Tests
Export Results
Analyzing Headers...

Fetching response from -

Response Overview
Status
-
Response Time
-
Content Type
-
Content Length
-
Final URL: -
Security Analysis
Present Security Headers
Missing Security Headers
Security Score: -
Response Headers (0)
Ready to Analyze Headers

Enter a URL and click "Analyze" to view HTTP response headers, security analysis, and performance metrics.

Features:
Security Header Analysis
Performance Metrics
Header Categorization
Export Functionality

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What HTTP headers and information can I analyze?
The tool typically shows response headers, security headers, caching directives, server information, SSL/TLS details, and sometimes performance metrics like response times and redirect chains.
Can I identify security vulnerabilities in HTTP headers?
Yes, the tool often highlights missing security headers like HSTS, CSP, X-Frame-Options, and others that protect against common web vulnerabilities. It may provide recommendations for improving security posture.
Does this help with website performance analysis?
Yes, you can analyze caching headers, compression settings, CDN configuration, and other performance-related headers that affect website loading speed and user experience.
Can I test multiple URLs or do bulk analysis?
Some tools support bulk URL testing, allowing you to analyze headers across multiple pages or compare header configurations between different websites or environments.
Is this useful for SEO and web development?
Very useful! Proper HTTP headers affect SEO (redirects, canonicals), security (affecting trust signals), and performance (affecting Core Web Vitals). It's essential for technical SEO and web development debugging.

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