HTTP Header Analyzer Network tools
Analyze HTTP response headers and security configuration. Check for HSTS, CSP, X-Frame-Options, and other security headers.
HTTP Header Analyzer
Analyze security headers, SSL/TLS certificates, cache policies, and performance metrics
Analyzing HTTP headers...
What is HTTP Header Analyzer?
HTTP Header Analyzer is a professional security analysis tool that examines HTTP response headers to identify potential security vulnerabilities, performance issues, and configuration problems. Our tool provides instant, comprehensive analysis of 40+ header types with actionable recommendations to improve your website's security posture.
Why Analyze HTTP Headers?
HTTP security headers are your first line of defense against common web vulnerabilities including XSS (Cross-Site Scripting), clickjacking, MIME-type sniffing, and protocol downgrade attacks. Properly configured headers can:
- Prevent XSS Attacks: Content Security Policy (CSP) blocks malicious script injection
- Stop Clickjacking: X-Frame-Options prevents your site from being embedded in malicious iframes
- Enforce HTTPS: HSTS (HTTP Strict Transport Security) forces secure connections
- Improve Performance: Cache headers reduce server load and improve load times
- Enhance Privacy: Referrer-Policy controls information leakage to third parties
Key Features
Security Analysis
13+ security header checks including HSTS, CSP, X-Frame-Options, COOP, COEP, and CORP with severity ratings and detailed recommendations.
SSL/TLS Scanner
Certificate validation, expiration tracking, issuer information, and SSL version detection to ensure encrypted connections are properly configured.
Cache Optimization
Analyze Cache-Control directives, ETag validation, compression settings, and cache efficiency to maximize performance.
CORS Validation
Comprehensive Cross-Origin Resource Sharing analysis including origin validation, credentials handling, and allowed methods.
CDN/WAF Detection
Automatically detect Content Delivery Networks (Cloudflare, CloudFront, Akamai) and Web Application Firewalls protecting your site.
Performance Metrics
Response time analysis, compression detection (Brotli/Gzip), HTTP/2 and HTTP/3 support verification.
How to Use HTTP Header Analyzer
Simply enter any URL (starting with http:// or https://) and click "Analyze". Our tool will:
- Fetch HTTP response headers from the target URL
- Analyze 40+ header types across 9 categories
- Calculate security scores with A-F grading
- Identify missing critical headers
- Provide actionable recommendations for improvements
- Display detailed timing breakdowns (DNS, TCP, SSL, TTFB)
Understanding Security Grades
Our analyzer assigns letter grades (A+ to F) based on comprehensive security scoring:
- A+ / A: Excellent security - All critical headers properly configured
- B: Good security - Minor improvements recommended
- C: Fair security - Several important headers missing
- D / F: Poor security - Critical vulnerabilities present, immediate action required
API Access
Automate header analysis with our REST API. Integrate HTTP header checking into your CI/CD pipeline, monitoring systems, or custom applications. Visit our API Documentation for authentication details and code examples in PHP, Python, JavaScript, and cURL.