Bandwidth theft: Others embedding your images on their sites.

Enable Hotlink Protection

cPanel → Security → Hotlink Protection → Enable → Add your domains.

Allow Your Own Domains

List domains that can embed your images (your site, CDN, etc.).

Advanced .htaccess Method

Custom Rewrite Rules

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?yourdomain.com [NC]
RewriteRule \.(jpg|jpeg|png|gif|webp)$ - [NC,F,L]

Protected Extensions Table

ExtensionRecommended
jpg, png, gifYes
webp, svgYes
mp4, pdfOptional