SSL Certificate Checker — free
Check SSL certificate details for any domain.
Server-Side Tool
SSL Certificate Checker requires making HTTP requests to external servers, which is blocked by browser security policies (CORS). This feature requires a server-side implementation.
Coming Soon
We are building a backend API to support this tool. Check back soon!
In the meantime, try these alternatives:
- Use browser developer tools (F12 → Network tab)
- Check online services like MXToolbox, Cloudflare Radar
- Use curl or wget from your terminal
How to use SSL Certificate Checker
Enter Your Domain Name
Click the text input field labeled 'Enter Domain' at the top of the checker. Type your domain (e.g., example.com or https://example.com) without spaces. You can include or exclude the protocol—the tool handles both formats automatically.
Click the Check Certificate Button
Press the blue 'Check Certificate' button located directly below the input field. The tool will immediately begin scanning the SSL certificate for that domain. A loading spinner will appear while the connection is being verified.
Review Certificate Details
View the results table showing Certificate Status (Valid/Expired/Self-Signed), Issuer name, Subject, Issue Date, Expiry Date, and Certificate Version. Green checkmarks indicate secure certificates; red warnings indicate potential security issues.
Export or Share Results
Click the 'Download Report' button to save certificate details as a PDF, or use the 'Copy to Clipboard' button next to each field to copy specific information for documentation or sharing with your team.