Arock Wordpress + WooCommerce Toolkit
20 small WordPress and WooCommerce tools in one lightweight plugin. Switch each tool on or off from one page; only the tools you turn on run.
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Image Sizes Manager
Choose which thumbnail sizes WordPress makes, cap the size of big uploads, see how much disk space each size uses and regenerate thumbnails in one click.
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What it does 01
Every image you upload is copied into a pile of thumbnail sizes, many of which your site never shows. This plugin lists them all with the disk space each one takes, lets you switch off the ones you don't need, caps the size of huge photos and regenerates your thumbnails to clean up, all from one page under Media.
- All sizes: see every thumbnail size your site makes, from WordPress, your theme and WooCommerce, with its dimensions and crop.
- Switch off: turn off the sizes you don't need; new uploads skip them.
- Disk use: see how many images have each size and how much disk space it uses.
- Big image limit: scale huge uploads down to a longest side you choose (WordPress default 2560 px), or turn scaling off.
- Originals: the original upload is always kept.
- Regenerate: rebuild all thumbnails, or a single size, from the original file.
- Safe batches: works in small batches with a progress bar, so big libraries never time out.
- Clean-up: thumbnails that are no longer needed are deleted, and "Saved by last regenerate" shows the space you got back.
- Old sizes: finds sizes left behind by a previous theme or plugin and removes them on the next regenerate.
- Failures: images that can't be rebuilt are listed, and an image is never left half-done.
- Edited images: images cropped or rotated in WordPress are rebuilt from the edited version.
- Simple setup: one settings page under Media › Image Sizes.
Setup 02 · about 2 minutes
- Install & Activate it. In WordPress go to Plugins → Add New → Upload Plugin, choose the .zip and click Install Now, then Activate. If the old Image Upload Size Limiter or Image Size Manager is still active, deactivate it — this plugin waits until you do.
- Check your sizes. Go to Media › Image Sizes and see which sizes use the most disk space.
- Choose and save. Switch off the sizes you don't need, set the big image limit, then click Save Changes.
- Regenerate. Click "Regenerate all thumbnails" to clean up the images you already have.
FAQ 03
used the old Image Upload Size Limiter. Are my settings kept?
Yes. Your max width and height are imported once: the larger value becomes the new "Longest side". If you used Image Size Manager, your size choices carry over as they are.
Does it delete my original images?
No. Originals are never touched. Regenerating rebuilds the thumbnails from them and only removes thumbnail files that are no longer needed.
Does it work with any theme and with WooCommerce?
Yes. It lists every size registered on your site, including your theme's and WooCommerce's, so you decide which ones stay.
Is it really free?
Yes. Free forever, no sign-up, no ads, and it doesn't track you.
What happens to my data when I delete the plugin?
Your images and thumbnails stay as they are. Deleting the plugin keeps your settings too, because Arock Toolkit and other versions of this plugin share them.
Changelog 04
1.0.0Nov 14, 2026 · Latest
- - First release.
- - Replaces the older Image Upload Size Limiter and Image Size Manager plugins and imports their settings.
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