SSL Certificate Checker

Check your SSL/TLS certificate — validity, expiration, issuer, domain match, and HTTPS redirect.

Expiry checkDomain matchHTTPS redirect~2 seconds

This tool analyzes the single URL you enter, not your entire website.

Analyzing...Running checks. This usually takes a few seconds.

What We Check

Every check comes with a pass/fail result and specific fix instructions.

SSL/TLS connection must succeed on port 443.

The Certificate Authority that issued your certificate (e.g. Let

Expired certificates cause browser security warnings and block visitors.

Renew at least 30 days before expiry to avoid downtime.

Certificate CN or SAN must include your domain name.

TLS 1.2+ is required. TLS 1.0/1.1 are deprecated and insecure.

HTTP should 301 redirect to HTTPS to ensure all traffic is encrypted.

Numbers that make a difference for your website.

Complete SSL audit

30d

Expiry alert threshold

TLS

Modern protocol check

301

HTTP to HTTPS verification

Common questions about this tool and how to use the results.

Why does SSL matter for SEO?

HTTPS is a confirmed Google ranking factor. Sites without SSL show 'Not Secure' in browsers, which destroys user trust and increases bounce rate.

How often should I check my SSL certificate?

Monthly at minimum. Set up monitoring for expiry alerts. Let's Encrypt certificates expire every 90 days.

What if my certificate is about to expire?

Most hosting panels auto-renew. If not, renew manually through your CA or set up certbot for automatic renewal.

Enter your URL above and get results in seconds. Completely free.

Start Audit