What is an SSL certificate?

An SSL (Secure Sockets Layer) or TLS certificate is a digital certificate that authenticates a website's identity and enables encrypted HTTPS connections between the browser and server.

How long does an SSL certificate last?

As of 2020, SSL certificates have a maximum validity of 398 days (about 13 months). Some free certificates from Let's Encrypt are valid for only 90 days and must be renewed automatically.

Does SSL affect Google rankings?

Yes. Google confirmed HTTPS as a ranking signal in 2014. Sites with valid SSL certificates have an advantage over HTTP sites. Expired or invalid certificates can cause ranking drops as Google may stop crawling the site.

What happens when an SSL certificate expires?

When an SSL certificate expires, browsers show a security warning blocking users from visiting your site. Google Chrome, Firefox, and Safari all block access to sites with expired certificates by default.

How often should I check my SSL certificate?

Check your SSL certificate monthly, or set up automated monitoring. At minimum, check 60 days before the expected expiry date to have enough time to renew without any service interruption.

Technical Seo

Free

SSL Certificate Checker

Check SSL certificate validity, expiration date, issuer, and whether it covers www and non-www domains.

Domain

What is SSL Certificate Checker?

The SSL Certificate Checker inspects the SSL/TLS certificate of any domain, providing details about the certificate's validity, expiration date, issuing certificate authority (CA), and encryption configuration. It alerts you to expired, expiring-soon, or misconfigured certificates that would break HTTPS and harm your SEO.

An expired or invalid SSL certificate causes browser "Your connection is not private" errors that drive away users and completely block Google from accessing your site. Proactive SSL monitoring is essential — certificate expiry is a common cause of sudden traffic drops and site outages.

Why Use SSL Certificate Checker?

A single expired SSL certificate can take your entire site offline — turning away users and preventing Googlebot from crawling. Certificate renewals are easy to forget, especially with 1-year certificates. This tool gives you advance warning of approaching expiry dates so you can renew before your site is affected.

Key Features of SSL Certificate Checker

✓Checks SSL certificate validity and expiration date
✓Shows days remaining until certificate expiry
✓Displays certificate issuer and certificate authority
✓Checks certificate chain completeness
✓Validates that the certificate matches the domain

How to Use SSL Certificate Checker

1
Enter the domain
Type your domain (e.g., example.com) into the SSL certificate checker.
2
Run the check
Click 'Check SSL Certificate' to connect to your server and read the certificate details.
3
Review validity
Confirm the certificate is valid and hasn't expired.
4
Check expiry date
Note the expiration date — set a reminder to renew 30+ days before expiry.
5
Fix certificate issues
Contact your hosting provider or certificate issuer to renew, replace, or fix any certificate errors.