About FixSecurityHeaders
Last updated · Reviewed by a CISSP-certified security practitioner
FixSecurityHeaders is a free scanner that grades your HTTP security headers and gives you the exact configuration to fix them on your stack.
Why does this exist?
Most header scanners stop at a letter grade. Teams then spend hours translating "add a CSP" into nginx, IIS or vercel.json syntax. We do that translation for you.
How does a scan work?
Our server sends one GET request to your public URL, follows up to five redirects, and reads the response headers. We never scan private or internal addresses, and we rate-limit requests.
Who is behind it?
FixSecurityHeaders is built by Muverity. Guidance is reviewed by a CISSP-certified security practitioner.