prevent hotlinking

add to .htaccess (change "yourdomain, add your own pix last line):
RewriteEngine on

RewriteCond %{HTTP_REFERER} !^$

RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?yourdomain.com [NC]

RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?google.com [NC]

RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?bing.com [NC]

RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?yahoo.com [NC]

RewriteRule \.(jpg|jpeg|png|gif)$ http://domain.com/nohotlinking.jpg [NC,R,L]