Arefly

Post revisions are backups of articles editors are writing and forgot to hit save. They are also article versions stored in the WP database, as a way to see how the post’s content evolved.
While they are important for this later reason, sometimes WordPress creates post revisions with minimal changes to the post content. These are “redundant” post revisions and they do nothing more but slow down page loading time and bulk up the database with useless content.
This WordPress plugin can help webmasters delete these kind of redundant posts.
中文介紹請看<a href="http://www.arefly.com/delete-post-revision/" rel="nofollow ugc">這裏</a>
<h4>Translators</h4>
<ul>
<li>Chinese, Simplified (zh_CN) – <a href="http://www.arefly.com/" rel="nofollow ugc">Arefly</a></li>
<li>Chinese, Traditional (zh_TW) – <a href="http://www.arefly.com" rel="nofollow ugc">Arefly</a></li>
<li>English (en_US) – <a href="http://www.arefly.com" rel="nofollow ugc">Arefly</a></li>
</ul>
If you have created your own language pack, or have an update of an existing one, you can send <a href="https://codex.wordpress.org/Translating_WordPress" rel="nofollow ugc">gettext PO and MO files</a> to <a href="http://www.arefly.com/about/" rel="nofollow ugc">Arefly</a> so that I can bundle it into Delete Post Revision. You can download the latest <a href="https://plugins.svn.wordpress.org/delete-post-revision/trunk/lang/delete-post-revision.pot" rel="nofollow ugc">POT file</a>.

Delete Post Revision

Help you clean out redundant & repetitive post revisions and thin out the database.

nicearma

<h4>DEPRECATED</h4>
This plugin is not longer maintained, you can see the new dev at https://wordpress.org/plugins/ultimate-media-cleaner/
I will wait a little for to delete this repository
Now the plugin can be translated, please help me to do it
DNUI (Delete Not Used Image) will search images from the database and try to find it on every Post and Page, if one image has one reference in this either post or page, the plugin will tell you that the image is used.
The version 2.0 is one big remake of this plugin, all the code have changed, now the code work by Rest Service and use AngularJS (not more the BackboneJS)
The update from the 1.x to the 2.0 is automatic, the only problem is that you will lost the backup folder and all backups made from the version 1.x
This plugin use:
<ul>
<li>AngularJS 1.5.8 core, resource and animate</li>
<li>Angular UI </li>
<li>Bootstrap</li>
</ul>
This version can search if the image is used at:
<ul>
<li>Excerpt (reference image or shortcode)</li>
<li>Publish Post/Page (reference image or shortcode)</li>
<li>Draft/Revesion Post/Page (reference image or shortcode)</li>
<li>Shortcodes (include gallery)</li>
</ul>
Translation:
<ul>
<li>Spanish</li>
</ul>
You can found the <a href="https://apps.nicearma.com/product/dnui-delete-not-used-image-pro/" rel="nofollow ugc">DNUI PRO VERSION</a> if you need more useful features, like compatibility with WooCommerce
If you need search all type of file or search from you upload folder try <a href="https://es.wordpress.org/plugins/cuf-cleanup-upload-folder/" rel="nofollow ugc">CUF</a>
Github at <a href="https://github.com/nicearma/dnui" rel="nofollow ugc">DNUI</a>

DNUI

Search image from the database and delete all unused images making space in your server…

Delete Post Revision vs DNUI