⚡ Website Tool
Security Headers Checker
Check common security-related response headers so browser protections and policy gaps are easier to review.
Interactive Tool
Use Security Headers
How to use Security Headers Checker
- Enter the public page URL you want to inspect.
- Run the checker and review headers such as HSTS, CSP, X-Frame-Options, Referrer-Policy, and Permissions-Policy.
- Use the findings to update server, CDN, framework, or reverse proxy configuration.
Why use Security Headers Checker
Security headers help browsers enforce safer behavior around transport, framing, referrers, permissions, MIME handling, and script loading. Missing headers do not always mean a site is compromised, but they often show hardening opportunities.
This checker is designed for quick visibility during launches, audits, and config reviews. Header policies can break features if applied blindly, so changes should be tested with the site flows that depend on embeds, analytics, forms, and third-party scripts.
Best for Security Headers
- Reviewing launch readiness for public pages.
- Spotting missing browser hardening headers.
- Checking whether CDN rules are reaching the final response.
Practical notes
- CSP should usually be rolled out carefully and tested.
- Check final redirected URLs, not only the first response.
- Different subdomains may have different header policies.