Check an SSL certificate
Check a website’s SSL certificate: who issued it, when it expires and which names it covers. Free SSL checker.
Runs on our server
Also with the ssl certificate checker
About this tool
Enter a domain to see its SSL certificate: the issuer, the expiry date and every domain name it covers. Check before a certificate runs out and browsers start showing warnings.
How to use it
- 1 Enter a domain such as example.com.
- 2 Select Check.
- 3 Review the validity and expiry.
Questions
How often do certificates expire?
Most certificates last 90 days (Let’s Encrypt) to a year and must be renewed before they expire.
What does the server do?
Our server connects to the address you enter to run the check. It only connects to public websites, and we don’t keep a log of your lookups.
Is this tool free?
Yes. It’s free to use with no sign-up and no limits for normal use.
More in Website & domain checks
- HTTP headers lookup See the HTTP response headers a URL returns.
- URL redirect checker Follow a URL's redirect chain hop by hop and see where it ends up.
- Meta tags checker Read a page's title, description, Open Graph and Twitter tags.
- HTTP/2 checker Check whether a website supports HTTP/2.
- Brotli compression checker Check whether a website serves Brotli-compressed responses.
- WHOIS lookup Get the public WHOIS registration record for a domain or IP.