Check any SSL certificate in seconds
Test any domain's SSL configuration, expiration date, security grade and WHOIS data. Free, no registration required.
Frequently Asked Questions
Is this SSL checker really free?
Yes — no signup, no credit card, no email required. The tool is rate-limited (5 checks per minute per IP) to keep it available for everyone.
What does this tool check?
It validates the SSL certificate chain, TLS version, cipher suite, HSTS configuration, Subject Alternative Names, and computes a SSL Labs-style security grade. It also pulls WHOIS data (registrar, expiry, DNSSEC) via RDAP.
How is this different from SSL Labs?
SSL Labs is a one-shot tool — you have to remember to run it. SSLTrackr lets you continuously monitor your certificates and get proactive alerts before they expire or before their grade drops.
Will the grade be the same as SSL Labs?
We use the same methodology as SSL Labs (protocols, ciphers, vulnerabilities, certificate quality). Grades should match in most cases.