Free Online SSL Checker Tool
Instantly test your website's SSL/TLS certificate and security configuration.
What is an SSL Certificate?
An SSL (Secure Sockets Layer) Certificate is a digital certificate that authenticates a website's identity and enables an encrypted connection. It's the technology behind the padlock icon and `https://` in your browser's address bar.
Having a valid SSL certificate is crucial for security (to protect user data), trust (to show visitors your site is legitimate), and SEO (Google uses HTTPS as a positive ranking signal).
Key Features
Comprehensive Details
Get all critical certificate details, including the issuer, subject, and validity period.
Expiration Tracking
Instantly see the exact expiration date and how many days are remaining to avoid security lapses.
Protocol Support
Check for support of modern and secure protocols like TLS 1.3 to ensure strong encryption.
Chain of Trust
Verify the complete certificate chain to ensure it's trusted by all major web browsers.
Instant Real-Time Check
Our tool performs a live check every time, giving you the most up-to-date information.
Easy to Understand
We present complex technical data in a clean, clear, and easy-to-read format.
SSL Certificate Checker
How to Use
Enter or Paste Domain
Input or paste the full domain name (e.g., example.com) you wish to check.
Click "Check SSL"
Press the button to initiate the real-time check of the SSL certificate.
Review the Details
Our tool will connect to the server and fetch the certificate's public information.
Take Action
Check the expiration date and ensure all details are correct for maximum security and trust.
Real World Applications
Website Maintenance
Website owners can regularly check their certificate's expiration date to ensure timely renewal and prevent security warnings.
Security Audits
Security professionals can quickly verify the certificate details and protocol support for any domain as part of a security assessment.
E-commerce Trust
Online shoppers can use this tool to verify that a new or unknown e-commerce site has a valid SSL certificate before entering payment details.
Developer Debugging
Developers can use it to troubleshoot SSL installation issues, such as an incomplete certificate chain or incorrect domain name.
Ready to Verify Your Website's Security?
Enter your domain name in the checker above to get an instant report on your SSL certificate!
Check Your SSL NowFrequently Asked Questions
Why does this tool link to SSL Labs?
A proper SSL/TLS configuration test is extremely complex and must be done from a dedicated server. To give you the most accurate and comprehensive security report, our tool links directly to the **Qualys SSL Labs test**, which is the undisputed industry standard and trusted by security professionals worldwide.
What is a good SSL Labs grade?
An **"A"** or **"A+"** grade is considered excellent and indicates a strong, modern security configuration. A grade of "B" is acceptable but could be improved. Any grade of "C" or lower indicates significant security weaknesses that should be addressed immediately with your hosting provider.
My certificate is valid but my site is "Not Secure". Why?
This is usually due to a "mixed content" error. It means your main HTML page was loaded over secure HTTPS, but it contains resources (like images, scripts, or CSS files) that are being loaded over insecure HTTP. You must update all resource links to use `https://` to fix this.
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Conclusion
Our Free SSL Checker is a simple yet powerful tool for anyone who owns or uses the internet. It provides instant, crucial insights into a website's security and trustworthiness by verifying its SSL certificate details in real-time. By staying informed about your certificate's status, you can protect your users, build trust, and improve your SEO.
Have Questions or Need a Custom Tool?
Our team is here to help. Whether you have feedback on our tools or need a custom solution for your business, we'd love to hear from you.
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