SSL Checker
Check any website's SSL certificate instantly.Verify status, expiry date, issuer, and protocol details.
Why Use Our SSL Checker?
Instant SSL Check
Enter any domain and get a full SSL certificate report in seconds. No installation needed.
Expiry Monitoring
See exactly how many days until your certificate expires with color-coded status indicators.
Certificate Details
View issuer, subject, protocol version, serial number, and validity dates at a glance.
Free & Private
100% free with no registration. We never store or log the domains you check.
Perfect For
Website Owners
Monitor your SSL certificate status and get alerted before it expires to avoid browser security warnings.
System Administrators
Quickly verify certificate installations across multiple servers and domains without SSH access.
DevOps Engineers
Validate SSL configurations after deployment. Check TLS version and certificate chain for production readiness.
SEO Specialists
HTTPS is a ranking factor. Verify that client websites have valid SSL certificates for better search visibility.
Security Auditors
Audit SSL configurations as part of security assessments. Check protocol versions and certificate validity.
Web Developers
Debug SSL issues during development. Verify certificates on staging and production environments.
Frequently Asked Questions
What is an SSL certificate?
An SSL certificate is a digital certificate that authenticates a website's identity and enables encrypted connections. Websites with SSL use HTTPS instead of HTTP, protecting data in transit between the browser and server.
How do I check if a website has a valid SSL certificate?
Enter the domain name into the SSL Checker above and click Check SSL. The tool connects to the server and retrieves the certificate details including validity, issuer, and expiry date.
What does it mean if my SSL certificate is expiring soon?
An expired SSL certificate causes browsers to show security warnings, which can drive visitors away. Renew your certificate before it expires. Most providers allow renewal up to 30 days in advance.
Is this SSL checker free?
Yes, completely free with no registration required. Check unlimited domains. We do not store any data about the domains you check.
What TLS versions should my server support?
Your server should support TLS 1.2 and TLS 1.3. TLS 1.0 and 1.1 are deprecated and insecure. The checker shows which protocol version was negotiated during the connection.
Why does the checker show my certificate as invalid?
A certificate may be invalid if it has expired, the domain doesn't match, it is self-signed, or the certificate chain is incomplete. Check the error details for specifics.