gazchap

By default, WooCommerce will only show thumbnails for categories if the category has a thumbnail set.
This plugin changes this behaviour so that WooCommerce will hunt for a product thumbnail in the category being displayed, and use that instead.
Upon activation, the plugin will configure itself with the basic settings. Any categories that you have on your WooCommerce store that do not have a thumbnail set will then start displaying any available product thumbnails inside the category.
There are a number of options, these can be found in WooCommerce -> Settings -> Products -> Auto Category Thumbnails.
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Thumbnail Size sets the image size that the plugin should use when displaying the thumbnails. Defaults to shop_thumbail, but shop_catalog may be a better option for some themes.
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Go into Child Categories makes the plugin look in child categories too, useful if you have products buried in quite a deep category structure.
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Random Thumbnail tells the plugin to pick a random product thumbnail from those it finds every time the page loads – otherwise it always uses the first one it finds.
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Use Transients tells the plugin to save the thumbnail it picks for a category as a transient in WordPress, so that it won’t have to do it again while the transient is still active. This can hugely increase performance on sites with many categories, so is enabled by default.
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Transient Expiry is the length of time each transient is active for before the site picks another thumbnail for the category. By default it is set to 1 day.
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Custom Transient Expiry can be used to define your own transient expiry period (in seconds) if none of the pre-defined options are suitable.
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Exclude Thumbnail IDs accepts a comma-separated list of attachment IDs from the WordPress Media Library. The plugin will never use any thumbnail with one of these IDs for a category.
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<h3>License</h3>
Licensed under the <a href="http://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">GNU General Public License v2.0</a>

GazChap's WooCommerce Auto Category Product Thumbnails

Pick WooCommerce category thumbnails automatically from products contained within those categories.

Sovrn

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Add related posts and related images to your blog. You save time, increase your SEO, and become a member of our network of over 120,000 bloggers!
<ul>
<li>Related posts from your own blogs and the network. Related posts can have thumbnails too!</li>
<li>Increase your authority by linking to the most authoritative related posts (good for SEO).</li>
<li>Related Images added with a single click. Proper credits are added by default!</li>
<li>Link Love by linking to other bloggers’ related posts. In turn, we’ll recommend your posts to other bloggers. Then find out how much love (links, tweets, likes) your posts received via Sovrn Dashboard.</li>
</ul>
After Sovrn analyzes your post, a point and click interface allows you to insert related posts and related images. By not having to search for related posts, you will save time and be more efficient.
Share the Link Love
<div class="embed-vimeo" style="text-align: center;"><iframe loading="lazy" src="https://player.vimeo.com/video/46745200" width="750" height="422" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe></div>
Link Love is easy with Sovrn. We recommend related posts from other bloggers, you decide which ones you want to link to. We then let them know that you gave them some love. And of course, other bloggers can and will do that for you as well!
Get to know more at <a href="http://www.sovrn.com" rel="nofollow ugc">Sovrn website</a>.
<h3>Terms of Service</h3>
The plugin source code is released under GPLv2. Usage of our service is governed by <a href="http://www.sovrn.com/editorial-network-terms-of-service/" rel="nofollow ugc">Sovrn Terms of Service</a> and <a href="http://www.sovrn.com/privacy-policy/" rel="nofollow ugc">Sovrn Privacy Policy</a>.

Editorial Assistant by Sovrn

This plugin finds related posts and related images while you write your post. Pick related posts manually!

GazChap's WooCommerce Auto Category Product Thumbnails vs Editorial Assistant by Sovrn