Verify your SSL/TLS certificate chain, check expiry dates, and detect self-signed or misconfigured certificates. Free — no signup required.
Why SSL Certificates Matter for Your Website
SSL (Secure Sockets Layer) certificates encrypt the connection between your visitors' browsers and your web server. This encryption protects sensitive data like passwords, credit card numbers, and personal information from being intercepted by attackers.
Beyond security, SSL is now a ranking factor for Google. Websites without HTTPS may be penalized in search results, and modern browsers display prominent "Not Secure" warnings on HTTP pages. An expired or misconfigured SSL certificate is even worse — browsers will actively block visitors from accessing your site.
The most common SSL issues we find are expired certificates (often due to failed auto-renewal), incomplete certificate chains, and weak protocol versions. Our checker flags all of these with specific remediation steps so you can fix issues before they impact your visitors.
Frequently Asked Questions
What happens when an SSL certificate expires?
When an SSL certificate expires, browsers display a prominent security warning that blocks visitors from accessing your site. This immediately damages trust, kills conversion rates, and can hurt your search rankings. Most visitors will leave immediately rather than bypass the warning.
How often should I check my SSL certificate?
At minimum, check your SSL certificate monthly. Ideally, set up automated monitoring that alerts you 30 days and 7 days before expiry. Many outages are caused by forgotten certificate renewals, especially when the person who set it up has left the organization.
What does "certificate chain incomplete" mean?
An incomplete certificate chain means your server isn't sending all the intermediate certificates needed to verify your SSL certificate back to a trusted root. Some browsers can work around this, but others will show a security error. Fix it by installing the complete certificate chain from your certificate authority.
Is a free SSL certificate (like Let's Encrypt) secure enough?
Yes. Free SSL certificates from Let's Encrypt provide the same encryption strength as paid certificates. The main difference is that paid certificates may offer extended validation (EV), which shows the organization name in the browser. For most websites, a free certificate is perfectly adequate.
Why does my SSL show as insecure even though I have a certificate?
Common causes include mixed content (loading HTTP resources on an HTTPS page), expired certificates, self-signed certificates not trusted by browsers, or incomplete certificate chains. This tool checks for all these issues and provides specific remediation steps.
Never miss an SSL expiry
GuardHound monitors your SSL certificates 24/7 and alerts you 30 days, 7 days, and 1 day before expiry.
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