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Free Plugin by ShortPixel v2.5.0

reGenerate Thumbnails Advanced

Regenerate thumbnails quickly and easily, including forced regeneration; very useful when changing a theme or adding new thumbnail sizes.

reGenerate Thumbnails Advanced

The facts

Rating
3.2★ from 59
Active installs
60k+
Price
Free
Last updated
20 Aug 2026
Added
Jul 2015
Requires WP
4.0
Tested up to
WP 7.1
Requires PHP
5.6
Downloads
1,279,970

Our analysis

AI-assisted

reGenerate Thumbnails Advanced is a WordPress plugin designed to help you update your thumbnails when switching to a new theme with different image sizes. It allows you to regenerate thumbnails for featured images, customize thumbnail sizes, and select image quality. The plugin features a user-friendly interface with a progress bar and statistics at the end of the regeneration process.

This plugin is suitable for WordPress users who need to maintain consistent image sizes across their site, particularly when changing themes. It simplifies the image management process, making it easier to ensure that all images are displayed correctly without manual adjustments.

Best for: WordPress users looking to manage image sizes effectively when changing themes.

What it does well

  • Regenerates thumbnails for featured images
  • Customizable thumbnail sizes and quality
  • User-friendly interface with progress tracking
  • Resume feature for interrupted processes
  • Integrated with ShortPixel Image Optimizer

Where it falls short

  • Limited information on advanced features in the free version
  • Pro features not available in the free version

Verdict

The reGenerate Thumbnails Advanced plugin offers a straightforward solution for updating thumbnails in WordPress. It is particularly useful for those needing to ensure consistent image presentation across their site.

From the developer

ShortPixel's own description of reGenerate Thumbnails Advanced, lightly tidied.

A free, fast, and easy-to-use Regenerate Thumbnails plugin, created and maintained by the team behind ShortPixel Image Optimizer.

The reGenerate Thumbnails Advanced (RTA) plugin is ideal if you are switching to a new WordPress theme with different image sizes. It updates your old thumbnails to fit your new theme and the Pro version helps you clean up unused thumbnails, to ensure all your images have the perfect size.

Simplicity is the key with our plugin, it’s as easy as 3 clicks and you’re good to go 😉

Features:
– You can choose to regenerate thumbnails only for featured images;
– You can easily customize the thumbnail list by adding any number of additional thumbnail sizes to suit your needs;
– You can select the preferred image quality for the regenerated thumbnails;
– Clean, simple and user-friendly interface with a progress bar showing the percentage of regenerated images;
– Statistics at the end of the process showing the total number of thumbnails regenerated;
“Resume” feature that picks up the regeneration process exactly where you left off if your browser processing tab closes unexpectedly or you have manually paused the process;
– And fully integrated with ShortPixel Image Optimizer for thumbnails compression and enhanced functionality;

PRO Features:
You will find exciting features in the PRO version, with more to come:
WP-CLI support to regenerate thumbnails. Especially useful for websites with a very large number of images, or when wp-admin resources are limited;
Automatic removal of outdated thumbnails that are no longer used;
– You can choose to delete the metadata for missing images and thumbnails;
Remove missing images and thumbnails from the media library if they no longer exist on the disk, along with the associated metadata;
– Automatically start image optimization with ShortPixel Image Optimizer immediately after regenerating the thumbnails;
Select intervals (last day, last week, last month or all images at once) for thumbnails regeneration as well as a custom interval of your choice;

Enhance Your WordPress website with the reGenerate Thumbnails Advanced Plugin

Managing images in the WordPress environment can sometimes be complex, but the reGenerate Thumbnails Advanced plugin simplifies this task, enhancing your website’s visual esthetics. More than just a standard WP thumbnail plugin, it offers unique features to improve the functionality and appeal of your website.

Easy Image Management for WordPress Users

One of the biggest challenges for WordPress website owners is keeping image sizes consistent. This is where our plugin comes into play, not only regenerating thumbnails but also changing the visual presentation of your website. Whether you’re updating a theme or revamping the look of your website, the reGenerate Thumbnails Advanced plugin will help you keep your images consistent and professional.

Regenerate Thumbnails Made Easy

For anyone who has ever experienced the need to regenerate thumbnails WordPress-wide, our plugin offers an intuitive and user-friendly approach. It is designed to fit perfectly in the WordPress environment, and ensures that your images are always presented in the best possible way without you having to laboriously adjust them manually.

Optimized Thumbnails for Improved Performance

Once you’ve successfully regenerated your thumbnails with Regenerate Thumbnails Advanced, the next step is a breeze. Easily optimize these thumbnails with ShortPixel Image Optimizer to significantly boost their performance. This integration not only ensures that your images are of the highest quality but also increases the overall efficiency of your website. With ShortPixel’s powerful optimization features, you can look forward to faster load times, improved SEO, and a better user experience.

A Versatile Tool for Different Needs

Whether you run a personal blog or a large e-commerce platform with WooCommerce, the reGenerate Thumbnails Advanced plugin is versatile enough to meet a variety of needs. It’s more than just regenerate thumbnails WooCommerce-style; it’s a comprehensive image management solution.

Optimize WordPress Thumbnails for Peak Performance

Read the full description on the official page →

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