What this tool checks
- HSTS, CSP, X-Frame-Options and other headers
- Simple score
- Missing header recommendations
Website Security Tools
Security Headers Checker
Check important browser security headers.
Run the check
Enter a public target. Checks are a point-in-time sample; private and internal addresses are blocked.
Why it matters
Security headers reduce clickjacking, MIME sniffing and browser-side attack risk.
Plain-English examples
- Audit a homepage after launch
Recommended fixes
- Add missing headers carefully
- Test CSP before enforcing strict policies
Understanding the result
Use findings as a starting point, confirm the intended configuration with your provider, and retest after a change. A successful check does not guarantee security, delivery, uptime or search rankings. Results depend on public DNS and what the server exposes at the time of the check.
Related tools
Run these checks next for a fuller picture.
Need help fixing the result?
