How can I redirect a domain from HTTP to HTTPS?

To redirect a site to the secure HTTPS version, we can use the .htaccess file in the root directory of the site. This file can be edited either through the File Manager available in the control panel or via FTP.

Once we have opened the file, we will add the following lines:

RewriteEngine on
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

After saving the changes, the domain will be redirected to the secure HTTPS version.

In case we are using CMS applications (Wordpress, Prestashop, Magento, etc.), we will need to modify certain settings for everything to work correctly.
Below you can find dedicated tutorials for the most common CMSs:

SSL Wordpress Settings
SSL Prestashop Settings
SSL Magento Settings