Check how well a website protects its visitors. The headers grader sends only the URL you enter to our server, which fetches that site's response headers and grades them. Nothing you enter is stored.
Run a real check against any public site and get plain-language results with remediation steps.
It shows which security headers your site sends with every page and grades how well they protect visitors, with an explanation for each one that is missing or weak. Headers are quick to fix, so the grade is a useful first check before a release or after a hosting change.
Headers tell the browser how to handle your pages. They do not find flaws in your application code, login flows, APIs, or the server behind them, such as injection, broken access control, or exposed admin pages. Those need hands-on testing.
Before launching a new application or major release, when customers or regulators ask for evidence of testing, and at least once a year for applications that handle sensitive data. A web application security audit tests your application against the OWASP Top 10 and reports each finding with remediation guidance.
