SSL Certificate Checker – Keep Your Website Secure
Check if your website HTTPS (SSL/TLS) certificate is valid, not expired, and correctly installed for the given domain.
HTTPS-SSL certificate checker – keep your website trusted
Use this SSL certificate checker to see in seconds whether your domain still has a valid HTTPS setup or if renewal is already urgent. Enter your website URL and the tool reads the live certificate, shows the issuer, validity period, remaining days and domain match, so you immediately know if visitors will see a secure padlock or a scary browser warning.
Run the check regularly on your main money pages, login and checkout URLs, then schedule renewal in time so sales and lead forms are never blocked by SSL errors. Combine this check with your technical SEO audits and hosting tasks to keep both rankings and conversions safe on HTTPS in the long term.
Monitor expiry dates before browsers start warning users
Keep an eye on the expiry date of every production certificate and renew it well in advance. Modern browsers display prominent security warnings when a certificate is expired, which can immediately reduce trust, conversions and even organic traffic if users bounce back to the search results.
Always check domain and SAN matches after changes
When you migrate a site, add new subdomains or move behind a proxy or CDN, verify that the Common Name and Subject Alternative Names really cover every hostname you use. A mismatch can break HTTPS on key landing pages, impact SEO and block customer logins or checkout.
Use trusted CAs and full HTTPS coverage for all key pages
Make sure your certificates come from a trusted certificate authority and that all important sections of your site – login, checkout, forms and SEO landing pages – are served strictly over HTTPS. Redirect HTTP to HTTPS consistently and include certificate checks in your regular technical SEO and security audits.
Try it now – Get 15 days free!
Discover how easy SEO can be with the right tools. Explore everything from technical SEO to keyword analysis, content optimization, link building, and more with SEOcheck.hu.
Try SEOcheck for free