gazchap

<p>By default, WooCommerce will only show thumbnails for categories if the category has a thumbnail set.</p>
<p>This plugin changes this behaviour so that WooCommerce will hunt for a product thumbnail in the category being displayed, and use that instead.</p>
<p>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.</p>
<p>There are a number of options, these can be found in WooCommerce -> Settings -> Products -> Auto Category Thumbnails.</p>
<ul>
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<p>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.</p>
</li>
<li>
<p>Go into Child Categories makes the plugin look in child categories too, useful if you have products buried in quite a deep category structure.</p>
</li>
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<p>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.</p>
</li>
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<p>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.</p>
</li>
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<p>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.</p>
</li>
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<p>Custom Transient Expiry can be used to define your own transient expiry period (in seconds) if none of the pre-defined options are suitable.</p>
</li>
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<p>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.</p>
</li>
</ul>
<h3>License</h3>
<p>Licensed under the <a href="http://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">GNU General Public License v2.0</a></p>


GazChap's WooCommerce Auto Category Product Thumbnails

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

YoOhw Studio

<p>Thumbnail Manager is a powerful tool to take full control over your WordPress image system.</p>
<p>Instead of letting themes and plugins generate dozens of unnecessary thumbnails, you can now:</p>
<ul>
<li><strong>Control which sizes are created</strong></li>
<li><strong>Remove unused thumbnails safely</strong></li>
<li><strong>Regenerate only what you actually need</strong></li>
</ul>
<p>All in one place.</p>
<h3>🚀 What it does</h3>
<p><strong>1. Regenerate Thumbnails (NEW)</strong><br />
– Regenerate thumbnails based on your current enabled sizes<br />
– Works in batches with progress tracking (no timeout issues)<br />
– Perfect after disabling unwanted sizes<br />
– Ensures your Media Library stays consistent and optimized</p>
<p><strong>2. Prune Unused Thumbnails</strong><br />
– Select sizes you want to <strong>KEEP</strong><br />
– Automatically detect and remove all other generated thumbnails<br />
– Supports:<br />
  – Registered sizes<br />
  – Orphan <code>-WxH</code> files<br />
  – <code>.webp</code>, <code>.bak</code>, <code>@2x</code>, <code>-1</code> variants</p>
<p><strong>3. Orphan File Discovery</strong><br />
– Detect leftover thumbnails no longer registered<br />
– Clean legacy sizes from old themes/plugins<br />
– Optional aggressive cleanup mode</p>
<p><strong>4. Disable Sizes for Future Uploads</strong><br />
– Prevent unnecessary thumbnails from being generated<br />
– Reduce storage usage going forward<br />
– Keeps your system lean and predictable</p>
<p><strong>5. Scoped Processing</strong><br />
– Limit operations to specific folders (year/month)<br />
– Safer testing on large Media Libraries</p>
<h3>❌ What it does NOT do</h3>
<ul>
<li>It <strong>does NOT delete original full-size images</strong></li>
<li>It <strong>does NOT modify image quality or compression</strong></li>
<li>It <strong>does NOT replace image optimization plugins</strong></li>
<li>It does not automatically run actions without your confirmation</li>
</ul>
<h3>🎯 Who is it for?</h3>
<ul>
<li>WooCommerce stores with heavy image usage</li>
<li>Sites using multiple themes/page builders</li>
<li>Developers cleaning legacy media bloat</li>
<li>Anyone hitting disk limits or slow backups</li>
</ul>
<h3>Features</h3>
<ul>
<li>3-tab UI: <strong>Regenerate</strong>, <strong>Prune Files</strong>, <strong>Thumbnail Sizes</strong></li>
<li>Batch processing with AJAX (no timeouts)</li>
<li>Dry-run preview before deletion</li>
<li>Smart orphan detection</li>
<li>Progress bars + live feedback</li>
<li>Future upload size control</li>
<li>Multisite compatible (run per site)</li>
</ul>
<h3>Usage</h3>
<h3>Regenerate (Recommended flow)</h3>
<ol>
<li>Go to <strong>Thumbnail Sizes</strong></li>
<li>Disable unwanted sizes</li>
<li>Click <strong>Save changes and run regenerate</strong></li>
<li>Let the system rebuild only the sizes you want</li>
</ol>
<h3>Prune Files</h3>
<ol>
<li>Select sizes to <strong>KEEP</strong></li>
<li>Run <strong>Dry-run</strong> first</li>
<li>Review results</li>
<li>Switch to <strong>Delete</strong> and execute</li>
</ol>
<h3>Thumbnail Sizes</h3>
<ul>
<li>Enable/disable sizes for future uploads</li>
<li>Does NOT affect existing images until prune/regenerate is used</li>
</ul>
<h3>Technical Notes</h3>
<ul>
<li>Uses <code>intermediate_image_sizes_advanced</code> to control generation</li>
<li>Uses AJAX batching to avoid server timeout</li>
<li>Safe file targeting via pattern matching</li>
<li>Requires <code>manage_options</code> capability</li>
</ul>
<h3>Privacy</h3>
<p>This plugin does not collect or transmit any personal data.<br />
All operations are performed locally on your server.</p>


Thumbnail Manager

Clean, control, and regenerate thumbnails with precision — remove unused sizes, prevent bloat, and rebuild what matters.

GazChap's WooCommerce Auto Category Product Thumbnails vs Thumbnail Manager