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SSL Certificate Checker

Check if a website has a valid SSL/TLS certificate and if HTTPS is properly configured.

SSL/TLS certificates encrypt communication between browsers and web servers, protecting sensitive data in transit. An expired, misconfigured, or missing certificate will trigger browser warnings and hurt user trust and SEO rankings.

This checker tests whether a domain responds over HTTPS. Due to browser limitations, detailed certificate information (issuer, expiry date) cannot be extracted client-side. For full certificate analysis, use tools like openssl or SSL Labs.

Checker

Results

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How to Use

  1. Enter the domain name to check
  2. Click Calculate to test
  3. See whether HTTPS is configured and responding
  4. For detailed cert info, use SSL Labs or openssl

FAQ

Why can't it show certificate details?

Browser JavaScript cannot access SSL certificate properties (issuer, expiry, etc.) for security reasons. This tool verifies that HTTPS works. Use SSL Labs for full certificate analysis.

What does it actually test?

The tool attempts to fetch the domain over HTTPS. A successful response means SSL is configured. A failure indicates SSL issues.

Is my data safe when I use SSL Certificate Checker?

Yes. All calculations run entirely in your browser. Your data is never sent to a server, stored in a database, or shared with anyone. You can use this tool with complete confidence that your information remains private.

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Network & Security Tools

Maintaining a healthy website requires regular infrastructure checks that most people skip until something breaks. These tools let you inspect DNS records, verify SSL certificates, check HTTP headers, scan ports, and audit page speed — the foundational health checks every site owner should run periodically.