SSL Lookup
Free SSL certificate checker. Inspect any site's certificate — issuer, validity dates, SANs and chain — to catch expiry issues before browsers warn visitors.
Free SSL Certificate Checker — Inspect Any Site's HTTPS Certificate
SSL Lookup connects to any hostname and decodes its TLS certificate: who issued it, who it is issued to, the exact validity window, signature algorithm and every SAN hostname it covers.
Check certificates before they expire, confirm a new certificate propagated correctly, or investigate browser security warnings.
How to use this tool
- Enter the hostname, for example
example.com. - Run the check — the live certificate is read directly from the server.
- Review issuer, subject, SANs and the valid-from / valid-to dates.
Why use it on Shortlys?
- See expiry dates and prevent outages before they happen
- Verifies the certificate actually served, not a cached report
- Free and unlimited, no account needed
Frequently asked questions
How does the SSL Lookup work?
Simply provide your input on the page and the tool processes it instantly — most steps run automatically as you type or upload.
Do I need to install anything?
No installation and no browser extension. Everything runs on the website itself.
Can I use it on any device?
Yes — the tool works on Windows, macOS, Linux, Android and iOS through your browser.
Looking for more? Shortlys also offers 126+ free online tools, URL shortening and bio link pages — all in one place.
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