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SSL Certificate Checker

Frequently Asked Questions

What is an SSL Certificate?

An SSL (Secure Sockets Layer) certificate is a digital certificate that encrypts the connection between your website and visitors. It ensures secure data transfer and displays the padlock icon in browsers.

How does the SSL Checker work?

Our SSL Checker scans a domain’s SSL certificate to verify its validity, issuer, expiration date, encryption details, mixed content issues, and whether the site correctly redirects HTTP to HTTPS.

Why is checking SSL important?

Regularly checking SSL certificates helps prevent website downtime, avoid browser “Not Secure” warnings, protect sensitive user data, and maintain customer trust.

What details can I see with the SSL Checker?

The tool shows:

. Expiration and issue dates

. Issuer and organization details

. Common Name (CN) and hostname match

. Signature algorithm & fingerprints (SHA-1, MD5)

. HTTPS redirect status

. Mixed content (insecure HTTP links)

Can I check if my SSL certificate is about to expire?

Yes. The SSL Checker shows the exact expiration date and the number of days left. You can also set up an email reminder so you’re notified before your SSL expires.

What happens if my SSL certificate is expired?

If an SSL certificate expires, browsers will show security warnings like “Your connection is not private,” which can scare away visitors and hurt your SEO ranking.

How do I fix mixed content errors?

Mixed content errors happen when a secure HTTPS page loads resources (images, scripts, CSS) over insecure HTTP. To fix it, update all URLs in your site code or CMS to use https://. Our checker lists insecure resources so you can correct them.

Does the SSL Checker test HTTPS redirection?

Yes. The tool checks if your domain automatically redirects HTTP requests to HTTPS. If not, it suggests a ready-to-use .htaccess rule to enforce HTTPS.

Can I download my SSL certificate from the checker?

Yes. After scanning, you can download the SSL certificate in .pem format directly from the tool for further analysis or server configuration.

Does this SSL Checker support renewal reminders?

Yes. You can enter your email address, and we’ll send you a reminder before your SSL certificate expires so you never miss a renewal.

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