SSL Certificate Checker
Is your padlock valid? See who issued your SSL certificate, which names it covers, when it expires and whether browsers trust it.
Enter your domain
With or without www; we check the exact name you type.
We connect live
We read the certificate your server sends and test it like a browser would.
Fix before it expires
An expired certificate blocks visitors with a full-page warning.
Questions people ask
What is an SSL certificate?
It is the file that lets your website load over https:// with a padlock. It encrypts what visitors type, such as phone numbers and payment details, and without it browsers label the site "Not secure".
My certificate expires soon. What should I do?
Free Let's Encrypt certificates last 90 days and normally renew themselves. If yours is close to expiry, auto-renewal has probably failed, often because the domain's DNS changed. Renew it from your hosting panel, or ask us to fix it.
Why does the browser say the certificate is not trusted?
The usual reasons are an expired certificate, a self-signed certificate, a certificate issued for a different name (for example only www), or a server that does not send the intermediate certificate. The check above tells you which one.
Do I need a paid SSL certificate?
For most business websites and online stores a free Let's Encrypt certificate is enough; browsers show the same padlock. Paid certificates add warranty and organisation validation, which few small businesses need.