SSL Certificate Checker
Verify the SSL/TLS certificate for any domain.
What is an SSL Certificate?
An SSL (Secure Sockets Layer) certificate encrypts data transmitted between a web server and a browser. When a site has SSL, you'll see a padlock icon and "https://" in the address bar.
SSL certificates are essential for security, user trust, and SEO. Google uses HTTPS as a ranking signal, and browsers now warn users about non-secure sites.
Certificates come in three validation levels: Domain Validated (DV), Organization Validated (OV), and Extended Validation (EV). Free certificates from Let's Encrypt provide DV-level security suitable for most websites.
Frequently Asked Questions
What is an SSL certificate?
An SSL certificate encrypts data between a web server and browser, enabling HTTPS. It verifies the site's identity and protects sensitive information.
How do I check if a website has SSL?
Look for a padlock icon and "https://" in your browser. Use an SSL checker tool for detailed certificate information including issuer and validity.
What's the difference between DV, OV, and EV certificates?
DV verifies domain ownership only. OV also verifies the business. EV requires the most rigorous verification and formerly showed a green address bar.
Are free SSL certificates secure?
Yes. Free certificates from Let's Encrypt provide the same encryption as paid ones. The difference is validation level and support, not security.