SSL CertificateTLS
Opens a real TLS handshake to the host and reports what the server actually presented — issuer, subject, validity window, days remaining, every SAN it covers, and how many certificates are in the chain. Check several hosts at once to spot the one about to lapse.
Frequently asked questions
What does SSL Certificate Checker do?
Check any site's TLS certificate — issuer, expiry countdown, SAN coverage and chain. It runs on ToolMunch's own API, so the result comes back to the page with nothing to install.
Is SSL Certificate Checker free to use?
Yes. SSL Certificate Checker is completely free on ToolMunch — no trial, no premium tier holding back the main feature, and no daily or hourly cap on how many times you can use it.
Do I need to create an account or sign up?
No. There is no account, no email address, and no login. Open SSL Certificate Checker, do the job, and take the result — nothing is gated behind a signup form.
Where is the work done?
SSL Certificate Checker sends what you give it to ToolMunch's own API, does the work there, and returns the result to your browser. It is used to answer that one request — it is not sold, shared, or added to an advertising profile.
Does SSL Certificate Checker work on Mac, Windows, and phones?
Yes. SSL Certificate Checker runs in any modern web browser on Windows, macOS, Linux, Chromebook, Android, and iOS. There is nothing to download or install.
Can I use it as many times as I want?
Yes. There is no queue, no per-hour quota, and no counter that runs out — run SSL Certificate Checker as often as the work needs.