Free HTTP Header Inspector — Inspect All Response Headers
Inspect all HTTP response headers on any URL — including security headers, caching directives, server information, and performance-related headers.
Free — no account required for a single check. Sign up for continuous monitoring →
What the HTTP Header Inspector checks
All response headers
Security headers (CSP, HSTS, X-Frame-Options)
Cache-Control and Expires
Server type disclosure
Content-Encoding
Redirect chains
How it works
Sends HTTP requests with verbose header logging to capture all response headers and analyses them for performance and security best practices.
Monitor continuously — not just once
This free tool runs a one-off check. AuditJet monitors your site on a schedule — alerting you when scores change, before performance regressions affect your rankings and revenue.
HTTP Header Inspector — FAQ
Is the HTTP Header Inspector free?
Yes — HTTP Header Inspector is completely free to use. No account required for a single-URL check.
How does the HTTP Header Inspector work?
Sends HTTP requests with verbose header logging to capture all response headers and analyses them for performance and security best practices.
What does the HTTP Header Inspector check?
All response headers. Security headers (CSP, HSTS, X-Frame-Options). Cache-Control and Expires. Server type disclosure. Content-Encoding. Redirect chains.
How is this different from Google PageSpeed Insights?
Google PageSpeed Insights is a one-off manual tool. AuditJet adds continuous monitoring, regression alerting, and revenue impact on top of the same performance analysis — so you're notified when scores change, not just when you remember to check.