SSL Certificate Checker

Verify SSL certificate status, check expiration dates, and analyze security configurations for any domain with our free online SSL checker tool.
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What is an SSL Certificate Checker ?

An SSL Certificate Checker is a powerful online tool that allows you to verify the SSL/TLS certificate status of any website or domain. This tool helps website owners, developers, and security professionals ensure their SSL certificates are properly configured, valid, and secure. </br> Our SSL checker analyzes various aspects of your SSL certificate including validity period, certificate authority, encryption strength, and potential security vulnerabilities. This comprehensive analysis helps maintain website security and user trust.

Key Features of Our SSL Checker

Certificate Validation
Instantly verify if your SSL certificate is valid, properly installed, and trusted by major browsers. Get detailed information about certificate chain and authority.
Expiration Monitoring
Check SSL certificate expiration dates to prevent unexpected certificate expiry that could lead to security warnings and user trust issues.
Security Analysis
Analyze encryption protocols, cipher suites, and security configurations to ensure your website meets current security standards and best practices.
Compatibility Check
Verify SSL certificate compatibility across different browsers and devices to ensure seamless user experience for all visitors.
Certificate Details
Get comprehensive information including issuer details, serial number, signature algorithm, and subject alternative names (SAN).
Free & Instant
Use our SSL checker tool completely free with instant results. No registration required, unlimited checks, and detailed reports.

How to Use the SSL Certificate Checker

Enter Domain:
Type the domain name you want to check in the input field (without https:// or www)
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Click Search:
Press the Search button to initiate the SSL certificate analysis
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Review Results:
Analyze the detailed SSL certificate information and security report
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Take Action:
Use the insights to fix any SSL issues or renew certificates before expiration
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Common SSL Certificate Issues

Expired Certificates
SSL certificates have validity periods. Expired certificates trigger security warnings and can harm user trust and SEO rankings.
Mixed Content
Loading HTTP resources on HTTPS pages creates security vulnerabilities and browser warnings that affect user experience.
Certificate Mismatch
When the certificate domain does not match the website domain, browsers display security warnings to users.
Weak Encryption
Outdated encryption protocols and weak cipher suites can make websites vulnerable to security attacks.

Why SSL Certificates Are Important

Data Encryption: Protects sensitive information transmitted between users and your website
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Authentication: Verifies your website's identity and prevents man-in-the-middle attacks
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SEO Benefits: Google considers HTTPS as a ranking factor, improving search visibility
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User Trust: Displays security indicators that build visitor confidence
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Compliance: Meets security requirements for payment processing and data protection regulations
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Frequently Asked Questions

How often should I check my SSL certificate ?
It's recommended to check your SSL certificate monthly and set up monitoring 30-60 days before expiration to ensure timely renewal and avoid service interruptions.
What does "SSL certificate chain incomplete" mean ?
This error occurs when intermediate certificates are missing from your server configuration. The complete certificate chain is necessary for proper SSL validation.
Can I check SSL certificates for subdomains ?
Yes, our SSL checker can verify certificates for subdomains. Enter the complete subdomain (e.g., mail.example.com) to check its specific SSL configuration.
What is the difference between SSL and TLS ?
TLS (Transport Layer Security) is the successor to SSL. Modern "SSL certificates" actually use TLS protocol, but the term SSL is still commonly used.
Why is my SSL certificate showing as untrusted ?
SSL certificates may show as untrusted due to self-signing, expired intermediate certificates, incorrect installation, or issues with the certificate authority.