reGenerate Thumbnails Advanced
View on WordPress.orgScores higher than 68% of indexed plugins
About
Regenerate thumbnails quickly and easily, including forced regeneration; very useful when changing a theme or adding new thumbnail sizes.
What It Does
reGenerate Thumbnails Advanced scans your media library and rebuilds all registered thumbnail sizes for every image, including sizes added after the originals were uploaded. It also offers a forced regeneration option that ignores existing files and creates fresh copies, which is handy after switching themes or installing a plugin that registers new image dimensions. The tool is designed to handle large libraries without timing out.
Who It's For
This plugin is best for site owners who have changed themes, added WooCommerce product imagery, or registered new image sizes and need every existing attachment reprocessed in one pass. It fits photography portfolios, e-commerce stores, and any image-heavy site where broken or missing thumbnails are hurting the layout. The 70,000 active installs suggest it has a reliable track record for medium to large media libraries.
Who Should Skip It
If you only have a handful of images and your theme has not changed, the default WordPress media tools may be enough and you can skip installing a dedicated regeneration plugin. Developers who prefer scripting bulk image jobs through WP-CLI will also find this GUI-only approach slower than command-line alternatives.
The Bottom Line
reGenerate Thumbnails Advanced does exactly what it promises, and the strong maintenance and compatibility scores make it a safe pick for most users who need to rebuild thumbnails after a theme change or WooCommerce setup. The middling user rating and limited support volume are mild concerns, but the 70,000 active installs show it works in production. It is a sensible default, though sites needing maximum speed or scale may want to benchmark it against Force Regenerate Thumbnails.
Related Plugins
Pick this instead if you want a more popular option with 200,000 installs and a higher overall quality score, especially for a one-time forced rebuild.
Choose this alternative if you want faster processing on very large libraries, as it focuses on efficient bulk regeneration.
Consider this only if the other two options do not fit, since its quality score of under 50 suggests limited reliability.