jowilki

This plugin allows you to display thumbnails and links to yours (or anyones!) latest Pins from Pinterest in your sidebar. It is styled after Pinterest and offers a clean and modern look to show off your pins.
This widget is fully customizable, you can:
<ul>
<li>pull the latest pins from any Pinterest user</li>
<li>display only pins from specific boards</li>
<li>choose the number of pins to display</li>
<li>show or hide the image captions</li>
<li>display a “Follow me on Pinterest” button under your pins</li>
</ul>
Features:
<ul>
<li>Clean and Modern Look (like Pinterest)</li>
<li>Looks great on light and dark backgrounds</li>
<li>Captions scale and look nice with long or short text</li>
<li>Semantic HTML</li>
<li>Easy to Install: Simply add a Pinterest username and you’re good to go!</li>
</ul>
More to come when Pinterest opens their API! This project is maintained on github if you’d like to contribute : 
https://github.com/jowilki/pretty-pinterest-pins

Pretty Pinterest Pins

A plugin to show off images, captions, and links from your latest Pinterest activity.

Bill Erickson

This add-on for <a href="https://wordpress.org/plugins/shared-counts" rel="ugc">Shared Counts</a> allows you to share a different image on Pinterest.
Shared Counts uses the post’s featured image for sharing across all platforms. But given the unique display of images on Pinterest, it’s useful to specify a separate, Pinterest-only image that’s formatted for that service.
This plugin will only work if <a href="https://wordpress.org/plugins/shared-counts" rel="ugc">Shared Counts</a> is active. It does not work with any other social sharing plugins.
Customization 
By default the plugin only applies to posts, but you can <a href="https://github.com/billerickson/Shared-Counts-Pinterest-Image#customization" rel="nofollow ugc">add support for other post types</a>.
Bugs 
If you find an bug or problem, please let us know by <a href="https://github.com/billerickson/Shared-Counts-Pinterest-Image/issues?state=open" rel="nofollow ugc">creating an issue</a>.
Contributions 
Contributions are welcome!
<ol>
<li>Open an <a href="https://github.com/jaredatch/Shared-Counts/issues" rel="nofollow ugc">Issue</a> on GitHub.</li>
<li>Fork Shared Counts on GitHub.</li>
<li>Create a new branch off of <code>develop</code>; branch name should be <code>issue/###</code> to reference the issue.</li>
<li>When committing, reference your issue and provide notes/feedback.</li>
<li>Send us a Pull Request with your bug fixes and/or new features.</li>
</ol>

Shared Counts – Pinterest Image

Use a separate image for sharing on Pinterest

Pretty Pinterest Pins vs Shared Counts – Pinterest Image