HTTP Headers Inspector for Security
Inspect HTTP response headers, security header coverage, cache rules, CORS, server details, and redirect behaviour for any public URL.
Inspect HTTP response headers
Why HTTP headers matter
HTTP headers tell browsers, crawlers, security tools, and performance systems how a page should be handled. They can affect caching, redirects, content type, framing protection, cross-origin behavior, referrer handling, and HTTPS enforcement. A missing or incorrect header can create security risk, broken assets, cache problems, or confusing crawl behavior even when the visible page appears normal.
Common header inspection use cases
Use this inspector when checking HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Cache-Control, CORS headers, server headers, and redirect-related responses. It is helpful after editing .htaccess rules, changing hosting, adding Cloudflare, fixing MIME-type errors, troubleshooting blocked CSS or JavaScript, or reviewing whether a site has basic security headers in place.
This HTTP headers inspector helps you review security, caching, redirects, and server response details in one place. Use it before launch, after hosting changes, or when a browser, SEO tool, or security scanner reports a header concern.
What to check next
After inspecting headers, run the SSL Certificate Checker, Redirect Checker, Page Size Checker, and Website Speed Test. Security headers are only one part of the full technical picture. SSL trust, redirect efficiency, page weight, and caching behavior should all be reviewed together when preparing a production website.
Common questions
Helpful answers about this tool
What does the HTTP Headers Inspector review?
It reviews the information and browser protections a website sends with each page response.
Will the tool change my website settings?
No. It only reviews the public response. Any changes must be made through the website, host, or delivery service.