Free Online SSL Certificate Checker
Secure Sockets Layer (SSL) and Transport Layer Security (TLS) certificates encrypt data exchanged between browsers and web servers, ensuring safe user interaction and maintaining SEO trust scores.
Our free SSL Certificate Checker diagnoses domain HTTPS readiness, verifying certificate validity, issuer details, and days left before mandatory renewal.
Key Features of Our Online SSL Certificate Checker
Instant Validity Verification
Determines if target domain certificate handshake is active and operational.
Expiration Countdown
Displays precise days remaining before SSL expiration to avoid website downtime.
Certificate Authority Identification
Identifies issuing Certificate Authority (CA) such as Let's Encrypt, DigiCert, or Cloudflare.
Browser Security Auditing
Helps prevent privacy warnings ("Connection Is Not Private") on web applications.
How to Use the SSL Certificate Checker
- Enter the website URL or domain name in the input field.
- Click the "Check SSL" button to initiate secure TLS handshake check.
- View SSL validity status, issuer details, and certificate expiration schedule.
Frequently Asked Questions (FAQs)
What happens when an SSL certificate expires?
Browsers show strict security warning screens blocking users from entering the site, resulting in massive traffic drops.
How often do free SSL certificates expire?
Free SSL certificates (like Let's Encrypt) typically expire every 90 days and require automated auto-renewals.