Tinsae Belay

This plugin will block all hotlinking to your uploaded medias from other website. 
Hotlink protection is provided via <code>.htaccess</code> rules in the <code>wp-content/uploads</code> directory.
<h3>Basic Usage</h3>
Once the Sazx Hotlink Blocker is installed go to your WordPress admin dahsboard > Plugins , and actiate the “Sazx Hotlink Blocker”. and that is all you need to do to start the protection, and cut bandwidth usage. the plugin will create .htacess files during activation, the created .htaccess file will be removed when the plugin is deactivated.

Sazx Hotlink Blocker

Blocks every hotlinks to your uploaded assests.

Milan Dinić

Matt Mullenweg

<a href="http://blog.milandinic.com/wordpress/plugins/cache-images/" rel="nofollow ugc">Plugin homepage</a> | <a href="http://blog.milandinic.com/" rel="nofollow ugc">Plugin author</a>
Cache Images is a plugin that gives users option to sideload images that are hosted on other domains to their own site. Sideloaded images are added to WordPress media library so you can use all tools related to images that you can use with images uploaded through WordPress. Image will be added as an attachment of first post where it is found, and every post where original URL is occurring will be updated with new URL. User can select from which domains to sideload images, including Blogger’s domains.
It uses AJAX so it means you can sideload large number of images even on slow servers. (AJAX functions are made by fork of code from plugin <a href="https://wordpress.org/extend/plugins/ajax-thumbnail-rebuild/" rel="ugc">AJAX Thumbnail Rebuild</a>)
This plugin is fully internationalized. You can find .pot file in languages folder where you should place your translation. Current translations are Serbian, Spanish, and Persian. Please send your translation by <a href="http://blog.milandinic.com/contact/" rel="nofollow ugc">contacting author</a> so that it can be included it in next releases.
Read more information about usage on <a href="http://blog.milandinic.com/wordpress/plugins/cache-images/" rel="nofollow ugc">author’s site</a>.

Cache Images

Goes through your posts and gives you the option to cache all hotlinked images from a domain locally in your upload folder

Sazx Hotlink Blocker vs Cache Images