HTTPS & SSL Tools
Free tools to check redirects, SSL certificates, TLS versions, HTTP/2, HTTP/3, and security headers. Pick one below—no signup, results in seconds.
HTTPS Checker
Redirect, SSL, security headers, HTTP/2 & HTTP/3 in one report.
SSL Checker
Certificate validity, issuer, expiry, and grade.
SSL Grade Check
A+ to F grade and what affects it.
Check SSL Expiry
When your certificate expires and days left.
301 Redirect Checker
Verify HTTP→HTTPS redirect and chain.
HTTP to HTTPS Redirect Check
Full redirect chain and status codes.
Security Headers Checker
HSTS, CSP, X-Frame-Options, and more.
SSL Certificate Checker
Certificate details and chain.
HTTP/3 Checker
See if your site advertises HTTP/3 (QUIC).
HTTP/2 Checker
ALPN h2 negotiation on TLS (port 443).
TLS 1.3 Checker
Which TLS versions your server enables.
How we compare
Or run the full check on the homepage (redirect + SSL + headers in one go).