Prevent hotlinking with htaccess and mod_rewrite

To stopping content stealing, just create an .htaccess file (or add to the existing file) and paste code below and upload/save it to your main directory(root of your homepage).

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?example.com(/)?.*$     [NC]
RewriteRule \.(bmp|gif|jpg|jpeg|png|mp3|swf|avi)$ - [NC,F,L]

You can replace requested files with a ' don't hotlink' image file.

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?example.com(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?yoursecondsite.com(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?forum.example.com(/)?.*$     [NC]
RewriteRule .*\.(bmp|gif|jpg|jpeg|png|mp3|swf|avi)$ http://www.example.com/stophotlinking.jpg [R,NC]