An SSL certificate is what gives a website the padlock and "https://" in the address bar. It does two jobs at once: it encrypts everything travelling between a visitor's browser and your server, and it proves the site is genuinely you. Here's how it works.
What an SSL certificate actually does
- Encryption. Data the visitor sends — passwords, payment details, form answers — is scrambled while in transit, so anyone tapping the connection reads gibberish.
- Authentication. The certificate ties your domain to an identity verified by a Certificate Authority, which is why browsers trust the padlock.
Visitors on a site with no SSL get warnings like "Not secure" or "Your connection is not private" — enough to make many people click away. Read HTTP vs HTTPS for the difference in practice.
How the padlock works, simply
Think of it like sending a locked box rather than a postcard. The certificate creates a key pair: your server holds a private key, and your site offers a public certificate to each visitor. Their browser and your server agree on a secret only they share, then all traffic travels locked.
You already have one on WebFulHost
WebFulHost hosting includes a free Let’s Encrypt SSL certificate, installed and auto-renewed for you. When your domain points at WebFulHost, its certificate is issued automatically — you don't need to buy SSL from anyone. Renewal is handled in the background, so the certificate stays valid year after year.
Do you ever need a paid certificate?
For nearly every business site, shop or blog on shared hosting, the free Let’s Encrypt certificate gives the same encryption and padlock as a paid one. If your customer base is very security-conscious (banks, clinics, large enterprises) a premium certificate may add prestige and a higher validation level, but it's a rarity for WebFulHost customers. The padlock itself is identical.
Checking yours
Visit your domain in a fresh browser window. You should see a padlock next to the address. If you see "Not secure" instead, or your site loads over "http://" by default, use How to Enable SSL and Force HTTPS to tidy it up.