SSL Checker
Free SSL certificate checker showing certificate validity, expiry date, issuer, and encryption details for any HTTPS website.
How to Use SSL Checker
Enter Domain
Type domain name.
Check SSL
Query certificate.
View Details
See validity, expiry, issuer.
Who Uses SSL Checker?
Web developers, system administrators, SEO professionals checking HTTPS, security auditors.
Why Use Our SSL Checker?
Certificate validity check
Expiry date shown
Issuer details
Free unlimited checks
Frequently Asked Questions
How can I verify if my website's SSL certificate is installed correctly?
You can verify your installation by entering your domain name into our SSL Checker tool, which scans your server's configuration. It will analyze your certificate chain and notify you if there are any missing intermediate certificates that could cause browser trust errors.
Why does my browser display a 'Not Secure' warning even though I have an SSL certificate?
This issue often occurs if your certificate has expired, is self-signed, or if there is a 'mixed content' issue where your site tries to load insecure HTTP assets over an HTTPS connection. Use our SSL Checker to identify the specific reason for the warning, such as a hostname mismatch or an outdated root certificate.
Is it possible for an SSL certificate to expire without me knowing?
Yes, SSL certificates typically have a validity period of 90 days to one year, and if auto-renewal fails, your site will lose its secure status. Our SSL Checker provides the exact expiration date so you can proactively manage renewals and prevent downtime or loss of user trust.
Does using an SSL checker tool provide a security risk to my domain?
No, our SSL checker is a public-facing diagnostic tool that only reads the publicly available certificate data presented by your server during the initial handshake. It does not access your private keys or sensitive server information, making it perfectly safe for monitoring any website.
What specific details does the SSL checker reveal about my website security?
Our tool provides comprehensive insights, including the certificate issuer, validity start and end dates, the cryptographic signature algorithm, and the full certificate chain status. These details are essential for web developers to ensure their site meets modern security standards and compliance requirements.