Security

SSL Certificates Explained: Why HTTPS Matters for Every Website

By ReadyWebs Published

SSL Certificates Explained: Why HTTPS Matters for Every Website

An SSL certificate encrypts the connection between your website and your visitors. When a site has SSL, the URL starts with HTTPS instead of HTTP, and browsers display a padlock icon in the address bar. This encryption protects sensitive data like passwords, credit card numbers, and personal information from being intercepted.

Why Every Website Needs SSL

Even if your website does not handle sensitive data, you still need SSL. Here is why:

Browser warnings. Chrome, Firefox, Safari, and Edge all display “Not Secure” warnings for HTTP sites. This scares visitors away, even if your site is perfectly safe.

Search rankings. Google confirmed that HTTPS is a ranking factor. All else being equal, an HTTPS site will rank above an HTTP site.

Data integrity. SSL prevents third parties from modifying your content in transit. Without SSL, internet service providers and public Wi-Fi networks can inject ads, tracking scripts, or even malware into your pages.

Trust. The padlock icon signals to visitors that your site takes security seriously. This is especially important for e-commerce, but it matters for every type of site.

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How SSL Works

When a visitor connects to your HTTPS site, the following happens in milliseconds:

  1. The browser requests a secure connection
  2. Your server sends its SSL certificate, which contains a public encryption key
  3. The browser verifies the certificate is valid and issued by a trusted authority
  4. The browser and server establish an encrypted connection using the exchanged keys
  5. All data transmitted between them is encrypted and secure

This process is called the TLS handshake (SSL is technically the old name; TLS is the current protocol, but everyone still calls them SSL certificates).

Types of SSL Certificates

There are three validation levels for SSL certificates:

Domain Validated (DV) certificates verify only that you control the domain. They are the fastest and cheapest to obtain. For most websites, DV certificates are all you need.

Organization Validated (OV) certificates verify your domain and basic organizational information. They take longer to issue because the certificate authority checks business registration details.

Extended Validation (EV) certificates involve thorough vetting of your organization. They used to display the company name in the browser address bar, but most browsers no longer do this, reducing their visible benefit.

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Getting a Free SSL Certificate

You do not have to pay for SSL. Let’s Encrypt is a free, automated certificate authority that issues DV certificates at no cost. Most hosting providers now include free SSL certificates (usually from Let’s Encrypt) with their hosting plans.

If your host offers free SSL, enable it. If they do not, consider switching to a host that does, or install a Let’s Encrypt certificate yourself using tools like Certbot.

Installing and Configuring SSL

Most hosting providers offer one-click SSL installation through their control panel. After installing the certificate, you need to configure your site to use HTTPS:

  1. Update your site URL in your CMS settings to use https://
  2. Set up 301 redirects from HTTP to HTTPS for all pages
  3. Update any internal links that use http:// to use https:// or relative URLs
  4. Check for mixed content errors (HTTP resources loaded on HTTPS pages)

Mixed content is the most common post-SSL issue. If your HTTPS page loads images, scripts, or other resources over HTTP, browsers will flag these as insecure and may block them.

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Key Takeaways

  • SSL encryption is mandatory for every website, not just e-commerce sites
  • Free SSL certificates from services like Let’s Encrypt are perfectly adequate for most sites
  • After installing SSL, configure redirects from HTTP to HTTPS and fix mixed content
  • DV certificates are sufficient for most small business websites
  • Your hosting provider likely offers free SSL setup, so enable it today if you have not already

This content is for informational purposes only and reflects independently researched guidance. Platform features and pricing change frequently — verify current details with providers.