SSL Checker

You’ve installed your SSL certificate but the padlock still isn’t showing — and your browser is either displaying a warning or nothing at all. It’s one of the most common post-installation frustrations, and the cause is rarely obvious. The padlock can be blocked by mixed content (a single image or script loading over HTTP instead of HTTPS), a broken certificate chain, an expired or mismatched certificate, or a misconfigured server. Our free Why No Padlock? tool diagnoses all of these in one scan. Enter your domain below and we’ll check your SSL certificate installation, verify your certificate chain, scan for insecure mixed content, and highlight exactly what’s preventing the padlock from appearing — so you can fix it fast.