Apache prevent hot linking or leeching of images using mod_rewrite howto

Q. My site hosts lots of good images and other site hot links to my images from their own site. Hot linking is eating lots of my bandwidth. How do I stop lechers or prevent hotlinking under Apache web server?

A. This is problem you may encounter, particularly if your site hosts unique images. However solution is quite simple ban image hot linking using Apache mod_rewrite to check the referral information the browser provides.

How do I prevent Apache hot linking of images / media?

There are many ways to block hot linking of images.

You can add any one of the following code to .htaccess file or to your own httpd.conf file to prevent.

Make sure Apache mod_rewrite is enabled.

Solution # 1 : Prevent “hot linking” of images

Open httpd.conf or .htaccess file using vi text editor
# vi httpd.conf
Append following config directive:

SetEnvIfNoCase Referer "^http://www.cyberciti.biz/" banimages=1
SetEnvIfNoCase Referer "^http://cyberciti.biz/" banimages=1
SetEnvIfNoCase Referer "^$" banimages=1
<FilesMatch ".(gif|png|jpe?g)$">
  Order Allow,Deny
  Allow from env=banimages=1
</FilesMatch>

Or you can use following simple code:

RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www.)?sxi.io/.*$ [NC]
RewriteRule ^.*.(bmp|tif|gif|jpg|jpeg|jpe|png)$ - [F] 

Solution # 2 : Prevent “hot linking” of images and redirect to new image

This method stop hotlinking and displays alternate image to endusers

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www.)?cyberciti.biz/.*$ [NC]
RewriteRule .*.(gif|jpe?g|png)$ http://sxi.io/noop.jpg [R,NC,L]

Unless the image is displayed on sxi.io, browers would see the image noop.jpg. Replace domain sxi.io and upload noop.jpg to webroot.

If you made changes to httpd.conf file; restart Apache:
# /etc/init.d/httpd restart

Posted by: SXI ADMIN

The author is the creator of SXI LLC and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.