Test any public site's SSL cert, chain, expiry, and TLS grade in seconds — no signup required.
Quick answer
Paste any domain into the free SSL checker at /tools/ssl-checker. You'll get the certificate chain, expiry date, issuer, TLS version, and a security grade in under 5 seconds. No signup.
What it checks
Certificate validity and days-until-expiry
Full chain (root + intermediates)
TLS protocol versions and cipher suites
Common misconfigurations (missing intermediates, weak ciphers)
SAN coverage for your domain and subdomains
Where to find it in Lemwatch
Open /tools/ssl-checker — no account required. Signed-in users can add the result as a monitored site with one click.
How to use it
Enter a domain (with or without https://).
Click Check SSL.
Review the grade, expiry, and chain details.
Click Monitor this site to get automated 30/14/7-day expiry alerts.
Share the report URL — every check gets a permalink.
FAQ
Does it work on internal or staging domains?
No — the tool must be able to reach the domain publicly. Use in-app SSL monitoring for private hosts.
How often can I run it?
Anonymous checks are rate-limited to prevent abuse. Signed-in users get higher limits.