Parse and analyse HTTP request and response headers. Paste raw header data and get a structured table with explanations for each header field.
Open HTTP Header Analyser → free, no sign-inHTTP headers carry critical information about requests and responses — caching directives, authentication mechanisms, content types, security policies, CORS settings. Reading raw header output is manageable but slow. The HTTP Header Analyser parses pasted headers into a structured table with explanations for each field — what it is, what the value means, and what it's used for.
Developers debugging API responses or browser requests, security engineers auditing HTTP security headers, anyone inspecting the headers from a network request in browser dev tools and wanting more context than the raw values provide.
No tutorials. No learning curve. Open it and get started.
No server uploads. Each header is explained, not just displayed — you get context for what the value means, not just what it is.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. HTTP Header Analyser was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
Where do I get HTTP headers?
From browser developer tools (Network tab), curl output, or API client tools like Postman or Insomnia.
What does it explain?
Each header name is explained — its purpose, typical values, and what different values mean.
Does it check for security headers?
Yes — security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security are highlighted.
Can I use it for both requests and responses?
Yes — both request and response header formats are supported.
Is my header data sent anywhere?
No — analysis runs locally.
Free. Instant. No sign-in. Open it and get the job done.
Open HTTP Header Analyser on Doathingy.com →