Free Online HTTP Header Parser
Parse and analyze HTTP request and response headers instantly. Our HTTP header parser tool categorizes headers into security, caching, CORS, and content types, providing detailed descriptions and security recommendations. Process everything locally in your browser for maximum privacy.
HTTP Header Analysis Tool
Understand your HTTP headers with automatic categorization and detailed explanations. Perfect for debugging API issues, checking security configurations, and learning about HTTP protocol. Supports both request and response headers with automatic detection.
Security Header Checker
Verify that your response headers include essential security headers like HSTS, Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and more. Get instant feedback on missing security headers and recommendations for improvement.
Developer-Friendly HTTP Tool
Built for developers working with REST APIs, web security, and HTTP debugging. Export parsed headers as JSON, filter by category, and copy individual headers with one click. All processing happens in your browser with no data sent to servers.
Frequently Asked Questions
What are HTTP headers?
HTTP headers are key-value pairs sent between client and server that provide metadata about the request or response, including content type, caching directives, authentication, and security policies.
How do I get HTTP headers to analyze?
You can copy headers from browser DevTools (Network tab), curl output with -v flag, Postman, or any HTTP client. Just paste the raw headers into the input field.
What security headers should my site have?
Essential security headers include Strict-Transport-Security (HSTS), Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and Referrer-Policy. Our tool checks for these automatically.
What is the difference between request and response headers?
Request headers are sent by the client (browser) to the server, including information like Accept, User-Agent, and Authorization. Response headers are sent by the server, including Content-Type, Cache-Control, and security headers.
Is my data secure?
Yes! All header parsing happens entirely in your browser. Your data never leaves your device, ensuring complete privacy and security when analyzing sensitive headers.
Can I export the parsed headers?
Yes, you can export the analysis as JSON format or copy individual headers. This is useful for documentation, debugging reports, or sharing with team members.