Free Website Security Scanner
Scan any website for HTTPS enforcement and security headers, and get an A–F security grade with plain-English fixes. Free.
About this tool
Most websites are missing basic protections that take minutes to add but block whole classes of attack — clickjacking, protocol downgrade, MIME sniffing and cross-site scripting. This free website security scanner checks any public URL for HTTPS enforcement and the key HTTP security headers (HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options and more), then grades the result A–F with plain-English explanations of what each finding means.
It's the same first-pass check our analysts run before a deeper engagement. A good grade isn't a guarantee of security, but a poor grade is a reliable signal that quick, high-value hardening is available. Run it on your own site, then use our security headers generator to produce the exact configuration to fix any gaps.
Frequently asked questions
What does the website security scanner check?
It checks whether the site enforces HTTPS and which HTTP response security headers are present and well-configured — including HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy — and grades the overall posture.
Is this a full penetration test?
No. This is a fast, non-intrusive surface scan of HTTPS and security headers. It does not test application logic, authentication, or server vulnerabilities. For a thorough assessment, book a penetration test with Neurobyte.
Why did my site get a low grade?
Usually because important security headers are missing. They're safe to add and take minutes — paste your stack into our Security Headers Generator to get ready-to-use Nginx, Apache or Vercel configuration.