Marcin Pietrzak

Allow to publish post thumbnails on sidebar and on RSS.
Other plugins by iworks: <a href="https://wordpress.org/extend/plugins/tag-list/" rel="ugc">Tag list</a>, <a href="https://wordpress.org/extend/plugins/auto-referrer/" rel="ugc">AutoReferrer</a>, <a href="https://wordpress.org/extend/plugins/flakuj/" rel="ugc">flakuj</a>.
<h3>Localizations</h3>
<ul>
<li>Polish (pl_PL) – <a href="http://iworks.pl/" rel="nofollow ugc">Marcin Pietrzak</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 me so that I can bundle it into Tag list. You can <a href="https://wordpress.org/extend/plugins/post-thumbnail-widget/admin/post-thumbnail-widget.pot" rel="ugc">download the latest POT file from here</a>.

Post Thumbnail Widget

Allow to publish post thumbnails on sidebar and on RSS.

Christian Foellmann

Ankit Pokhrel

Dynamically adds multiple featured image or multiple post thumbnail functionality to your page, posts and custom post types. This plugin provides you an interface to add any number of featured image as you want without writing a single line of code. These featured images can then be collected by the various theme functions.
Overview
Dynamic Featured Image enables the option to have MULTIPLE featured images within a post or page. 
This is especially helpful when you use other plugins, post thumbnails or sliders that use featured images. 
Why limit yourself to only one featured image if you can do some awesome stuffs with multiple featured image? 
DFI allows you to add different number of featured images to each post and page that can be collected by the various theme functions.
<blockquote>
A NOTE ABOUT SUPPORT: We’re here to help troubleshoot bugs, but please don’t set expectations early as the support forums at WordPress.org are only checked once in a while.
</blockquote>
How it works? 
1. After successfull plugin activation go to <code>add</code> or <code>edit</code> page of posts or pages and you will notice a box for second featured image. 
2. Click <code>Set featured image</code>, select required image from “Dynamic Featured Image – Media Selector” popup and click <code>Set Featured Image</code>. 
3. Click on <code>Add New</code> to add new featured image or use <code>Remove</code> link to remove the featured image box. 
4. You can then get the images by calling the function <code>$dynamic_featured_image->get_featured_images([$postId (optional)])</code> in your theme. (<a href="https://github.com/ankitpokhrel/Dynamic-Featured-Image/wiki" title="Documentation for current version" rel="nofollow ugc">Click here for details</a>) 
5. The data will be returned in the following format.
<pre><code>array
 0 => 
 array
 'thumb' => string 'http://your_site/upload_path/yourSelectedImage.jpg' (length=50)
 'full' => string 'http://your_site/upload_path/yourSelectedImage_fullSize.jpg' (length=69)
 'attachment_id' => string '197' (length=3)
 1 => 
 array
 'thumb' => string 'http://your_site/upload_path/yourSelectedImage.jpg' (length=50)
 'full' => string 'http://your_site/upload_path/yourSelectedImage_fullSize.jpg' (length=69)
 'attachment_id' => string '198' (length=3)
 2 => ...
</code></pre>
Resources 
1. <a href="https://github.com/ankitpokhrel/Dynamic-Featured-Image/wiki" title="Documentation for current ver." rel="nofollow ugc">Detail Documentation</a>. 
2. <a href="https://stackoverflow.com/questions/tagged/dynamic-featured-image" title="StackOverflow Tag" rel="nofollow ugc">StackOverflow Tag</a>.
MultiSite Info 
You can use <code>Network Activate</code> to activate plugin for all sites on a single install. It is only available on the Network admin site not anywhere else. 
Simple <code>Activate</code> activates for the site you are currently on. These will be permitted to be activated or deactivated on ANY blog.
While deleting the plugin from the <code>Network</code> be sure that the plugin is deactive in all installation of your WordPress network.
Contribute 
If you’d like to check out the code and contribute, join us on <a href="https://github.com/ankitpokhrel/Dynamic-Featured-Image" title="View this plugin in github" rel="nofollow ugc">Github</a>. 
Pull requests, issues, and plugin recommendations are more than welcome!

Dynamic Featured Image

Works fine!

Dynamically adds multiple featured image (post thumbnail) functionality to posts, pages and custom post types.

Post Thumbnail Widget vs Dynamic Featured Image