Free SSL Certificate Checker
Check your SSL certificate status, validity, and expiration date. Then set up automated monitoring so you never have to check manually again.
Start Monitoring - It's FreeWhat is an SSL Certificate?
An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates a website's identity and enables an encrypted connection between a web server and a browser. When a website has an SSL certificate, the URL begins with https:// instead of http://, and browsers display a padlock icon to indicate the connection is secure.
SSL certificates contain the website's public key, the domain name, the issuing certificate authority, the certificate's expiration date, and other important details. They are essential for protecting sensitive data such as login credentials, payment information, and personal details.
Why SSL Matters for Your Website
Security
SSL encrypts data in transit, protecting your users from man-in-the-middle attacks and data interception.
SEO Rankings
Google uses HTTPS as a ranking signal. Websites without SSL certificates are penalised in search results.
User Trust
Browsers display warnings for sites without SSL. A valid certificate shows users your site is trustworthy.
Automate Your SSL Certificate Checks
Manually checking SSL certificates is tedious and error-prone. With Free SSL Tester, you add your domains once and we monitor them automatically. Our system checks your certificates on a regular schedule and alerts you before they expire.
- Automatic daily checks on the free plan, hourly on Pro
- Email alerts before your certificate expires
- Full certificate chain verification and details
Frequently Asked Questions
What is an SSL certificate?
An SSL certificate is a digital certificate that authenticates a website's identity and enables an encrypted connection. It ensures that data transferred between a user's browser and the website remains private and secure.
How do I check my SSL certificate?
Sign up for Free SSL Tester, add your domain, and our tool will automatically verify your certificate status, expiration date, issuer details, and chain of trust. Free users get daily checks, Pro users get hourly monitoring.
Why is SSL important for my website?
SSL is critical for website security, user trust, and SEO. Google uses HTTPS as a ranking signal, browsers show warnings for sites without SSL, and an encrypted connection protects your users' data from interception.