Free tools
Free security tools
Single-purpose checkers for the security layers that matter most. Paste a URL, get a plain-English answer in seconds. No signup.
Security headers checker
Check CSP, HSTS, X-Frame-Options, and more in seconds.
Open toolSSL checker
Certificate validity, TLS version, and cipher strength — in 10 seconds.
Open toolCORS checker
Is your API open to any website? Find out now.
Open toolCookie audit
Check Secure, HttpOnly, and SameSite flags on every cookie.
Open toolEmail security checker
Can someone spoof email from your domain? Check in 10 seconds.
Open toolExposed files checker
Find .env, .git, and other sensitive files before attackers do.
Open tool