What Is an SSL Certificate and Why Does Your Site Need One?

If you've ever noticed a padlock icon in your browser's address bar, or seen a URL starting with "https://" instead of "http://", you've already encountered SSL in action. But what exactly is it, and why does every website need one?

What Is an SSL Certificate?

SSL stands for Secure Sockets Layer (though the modern standard is actually TLS — Transport Layer Security). An SSL certificate is a digital credential that does two things: it proves your website's identity, and it encrypts all data transmitted between your server and your visitors' browsers.

When a visitor loads your site over HTTPS, their browser and your server perform a "handshake" — exchanging keys that allow all subsequent communication to be encrypted. Even if someone intercepts the traffic, they see only scrambled data.

Why Does Your Site Need One?

Google requires it. Since 2018, Google Chrome marks all HTTP sites as "Not Secure." This warning appears in the address bar for every visitor and immediately damages trust. Google also uses HTTPS as a ranking signal — all else being equal, an HTTPS site ranks higher than an HTTP one.

Your visitors expect it. Modern users are increasingly security-aware. Surveys show that a significant majority of users will abandon a site that shows a "Not Secure" warning, especially on checkout or contact pages.

It protects sensitive data. Without SSL, any data submitted through forms on your site — contact forms, login credentials, payment details — is transmitted in plain text and can be intercepted.

It's free. Thanks to Let's Encrypt, a non-profit certificate authority, SSL certificates are available at no cost. There's no reason not to have one.

Types of SSL Certificates

Domain Validated (DV): The most common type. Verifies that you control the domain. Issued in minutes and free via Let's Encrypt. Suitable for most websites.

Organisation Validated (OV): Verifies your organisation's identity as well as domain ownership. Shows your company name in certificate details. Better for business sites.

Extended Validation (EV): The highest level of verification. Historically showed a green bar with company name, though modern browsers have moved away from this visual distinction.

How to Get One with Nexlara

All Nexlara hosting plans include a free Let's Encrypt SSL certificate that is automatically installed and renewed before expiry. You don't need to do anything — your site will be served over HTTPS from day one.

If you're transferring an existing site, our support team can help ensure your SSL is properly configured and that all HTTP traffic is redirected to HTTPS.