What the results mean
The tool checks for HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy. Present headers are one signal, and missing headers need context.
How to use this tool
- Enter a public URL.
- Review which headers were returned.
- Use the HTTP Headers Checker for raw header context, Redirect Checker for chain behavior, Open Graph / Social Preview Checker for share metadata, and Robots.txt, Sitemap, or Canonical / Noindex Checker for crawler and indexing context.