Konrád Koller

This plugin helps you to fix any missing thumbnail issue in a fairly short time. The only thing you need to do is just few simple click and the plugin does the rest. It can be really helpful if you have thousands of images in your database.
You can regenerate thumbnails for each single image in your database or you can simply select those you really want to update. If you choose a post or page the plugin will regenerate thumbnails for each related images. You can choose from the following methods:
<ul>
<li>Regenerate thumbnails for all images in the database.</li>
<li>Bulk action in post liste: You can choose which one to update by checking the checkboxes.</li>
<li>Media library items: Move your mouse over the chosen image(s) and click on “Regenerate thumbnails” link.</li>
<li>Post editor: click on “Regenerate thumbnails” button which is next to “Add media” button. (Off by default)</li>
</ul>
Furthermore you can add your own thumbnails sizes, change default JPG compression rate and mass regenerate thumbnails. The best thing about this plugin is that you can use it with custom post types as well.

ONet Regenerate Thumbnails

Doesnt have 4.4.1 bulk generation support. But you can generate thumbnails one by one.



Doesnt have 4.4.1 support completely

Fix missing thumbnails in no time with few easy clicks. The plugin does the hard work.

Cristian Leguizamón

MCRPD Regenerate Download Permissions is a specialized utility stores that need to regenerate download permissions for past orders.
Unlike the default WooCommerce tools, this plugin allows you to: 
* Target specific products: Only regenerate permissions for orders containing specific Product IDs. 
* Target specific order statuses: Choose which order statuses to process via a modern, user-friendly interface. 
* Batch Processing: Uses AJAX to process orders in batches of 20 to avoid server timeouts on large stores. 
* Real-time Feedback: View detailed logs and progress scanning/update counts in real-time. 
* Modern UI: Clean, minimalist interface designed for clarity and ease of use.
<h4>Use cases</h4>
<ul>
<li>You added a downloadable file to an existing product and need past purchasers to get access.</li>
<li>You accidentally deleted permissions and need to restore them for completed orders.</li>
<li>You use a dropshipping setup where permissions need to be refreshed based on status changes.</li>
</ul>
<h3>Feedback & Suggestions</h3>
This plugin is in constant evolution. If you have ideas or suggestions, do not hesitate to contact me at hola@devcristian.com. Your collaboration is highly valued!

MCRPD Regenerate Download Permissions for woocommerce

Regenerate downloadable permissions for orders in batches via AJAX.

ONet Regenerate Thumbnails vs MCRPD Regenerate Download Permissions for woocommerce