SSL/TLS Certificate Checker
Check if a website has a valid SSL certificate and is using HTTPS properly. Note: Full certificate details require a server-side check — this tool verifies HTTPS availability and basic connection security.
What is SSL/TLS?
SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) encrypt the connection between your browser and a website. When you see the padlock icon and "https://" in your browser, the site is using SSL/TLS. Without it, anyone on your network (including your ISP or VPN provider) can see exactly what you're doing on that site.