Learn how to check your SSL certificate status, understand common errors, and keep your website secure and SEO-friendly with HTTPS.
SSL certificates are no longer optional. Google flags HTTP websites as "Not Secure" in Chrome, users are trained to look for the padlock icon, and search engines prioritize HTTPS pages in rankings. Yet many website owners install an SSL certificate once and forget about it — until it expires and their site suddenly shows security warnings to every visitor.
An SSL checker lets you verify your certificate's status, expiration date, chain validity, and configuration at a glance. In this guide, you'll learn how SSL works, why it matters for both security and SEO, and how to use Risetop's free SSL checker to stay on top of your website's security.
SSL (Secure Sockets Layer) is a cryptographic protocol that encrypts data transmitted between a user's browser and your web server. When a visitor accesses your site over HTTPS, the SSL certificate establishes a secure, encrypted connection that prevents third parties from intercepting sensitive information.
Here's what an SSL certificate actually does:
When you visit a site with a valid SSL certificate, you'll see a padlock icon in the browser's address bar and the URL begins with https:// instead of http://.
Google has used HTTPS as a ranking signal since 2014. While it's a lightweight signal on its own, the cumulative impact is significant. HTTPS pages are crawled more frequently, indexed more reliably, and ranked slightly higher than their HTTP equivalents. If two pages are otherwise equal in quality and relevance, the HTTPS version wins.
Chrome's "Not Secure" warning is impossible to miss. When visitors see it, the majority leave immediately. Studies show that over 80% of users will abandon a website that displays a security warning. Even if they don't leave, the warning erodes trust and reduces the likelihood of form submissions, purchases, or sign-ups.
Every time a visitor fills out a form — whether it's a login, a contact form, or a checkout page — their data travels across the internet. Without SSL, that data is sent in plain text and can be intercepted by anyone on the same network. This is especially dangerous on public WiFi networks.
If you process payments, PCI DSS compliance requires an SSL certificate. Without it, you can't legally accept credit card transactions. Even if you use a third-party payment processor like Stripe, your site still needs SSL to protect the checkout flow.
Using Risetop's free SSL checker takes just a few seconds:
The checker validates the entire certificate chain — not just your leaf certificate, but also the intermediate certificates that link it to a trusted root. This is critical because chain issues are one of the most common causes of SSL errors.
This is the most common and most damaging SSL error. When your certificate expires, browsers refuse to connect to your site. The fix is simple: renew the certificate. If you're using Let's Encrypt, renewal is typically automatic. If you're using a paid certificate, contact your certificate authority before expiration.
Mixed content happens when an HTTPS page loads resources (images, scripts, CSS) over HTTP. Browsers block or warn about this. Fix it by updating all resource URLs to use HTTPS:
<!-- Wrong: Mixed content -->
<img src="http://example.com/image.jpg">
<!-- Correct: HTTPS resource -->
<img src="https://example.com/image.jpg">
<!-- Also correct: Protocol-relative -->
<img src="//example.com/image.jpg">This error occurs when the certificate was issued for a different domain than the one being accessed. It commonly happens when migrating a site to a new domain without updating the SSL certificate, or when accessing a site via an IP address instead of its domain name.
Web servers must include not just your certificate but also the intermediate certificates that connect it to a trusted root. Missing intermediate certificates cause "not trusted" errors in some browsers. Most certificate authorities provide intermediate certificate bundles — make sure your server is configured to serve them.
An SSL (Secure Sockets Layer) certificate is a digital certificate that encrypts data transmitted between a user's browser and your web server. It enables HTTPS, turning HTTP into a secure connection that protects sensitive information like passwords, credit card numbers, and personal data from interception.
Yes. Google confirmed HTTPS as a ranking signal in 2014. While it's a relatively minor factor compared to content quality and backlinks, it can serve as a tiebreaker between otherwise equal pages. More importantly, Chrome and other browsers show "Not Secure" warnings for HTTP pages, which significantly hurts click-through rates.
Check your SSL certificate at least once a month. Set a reminder 30 days before expiration to ensure you have time to renew. Many automated tools like Let's Encrypt handle renewal automatically, but you should still verify that auto-renewal is working correctly.
When an SSL certificate expires, visitors will see a browser warning that your site is not secure. This causes most users to leave immediately. Search engines may also flag your site and reduce rankings. In severe cases, your site may be removed from search results entirely until the certificate is renewed.
DV (Domain Validation) only verifies domain ownership — it's free via Let's Encrypt and suitable for most websites. OV (Organization Validation) verifies both domain ownership and organization identity. EV (Extended Validation) requires the most thorough verification and used to show the company name in the browser address bar. For most sites, a free DV certificate is sufficient.
Yes. SNI (Server Name Indication) technology allows multiple SSL certificates to share a single IP address. Most modern web servers and browsers support SNI, so shared hosting environments can run HTTPS without needing a dedicated IP for each domain.
Mixed content occurs when a page loaded over HTTPS includes resources (images, scripts, stylesheets, iframes) loaded over HTTP. Browsers block or warn about mixed content because it undermines the security of the HTTPS connection. Fix it by updating all resource URLs to use HTTPS or protocol-relative URLs.
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