SSL Certificate Checker
Online SSL/TLS certificate checking tool
Overview
Our online SSL certificate checker helps you quickly inspect your website's HTTPS configuration and SSL certificate status. By examining critical indicators like certificate validity, chain integrity, protocol versions, and cipher suites, it helps you identify potential security issues and ensure your HTTPS setup follows best practices.
Features
- SSL certificate status check
- Certificate validity lookup
- Certificate chain verification
- TLS protocol version check
- Encryption cipher suite display
- Certificate authority identification
- HTTPS configuration security assessment
How It Works
- Enter the domain name you want to check
- The tool initiates a TLS handshake with the target server
- It retrieves and parses the SSL certificate details
- Certificate status, validity, protocol version, and cipher suite results are displayed
Tips
- Set up certificate expiry reminders and begin the renewal process 30 days before expiration
- Prefer TLS 1.2 or higher and disable TLS 1.0 and 1.1
- Regularly verify certificate chain integrity to ensure certificates are issued by a trusted Certificate Authority
FAQ
What happens when an SSL certificate expires?
When an SSL certificate expires, browsers display security warnings to users, reducing trust. Search engines may also lower your site ranking, and API calls may fail. It is recommended to renew certificates 30 days before expiration.
Why should I check the TLS protocol version?
Older TLS versions (1.0 and 1.1) have known security vulnerabilities. Modern browsers have already deprecated support for these versions. Upgrading to TLS 1.2 or higher significantly improves website security.
Is the checking tool itself safe to use?
Yes. The inspection only reads publicly available SSL certificate information from the target server and does not involve any sensitive data. All checks are performed through standard TLS handshake protocols.