Simple Image Sizes
This plugin lets you create custom image sizes for your site. Override your theme sizes directly on the Media settings page, regenerate thumbnails, an …
The facts
- Rating
- 4.6★ from 91
- Active installs
- 60k+
- Price
- Free
- Last updated
- 17 Aug 2026
- Added
- Mar 2011
- Requires WP
- 3.5
- Tested up to
- WP 7.1
- Requires PHP
- 8.0
- Downloads
- 1,048,505
Our analysis
AI-assistedSimple Image Sizes is a WordPress plugin that allows you to create custom image sizes for your website. You can override theme sizes directly from the Media settings page and regenerate thumbnails in bulk. This plugin is suitable for users who need more control over image dimensions and want to manage media sizes effectively.
The plugin provides options to insert images at the correct size in posts, control the visibility of sizes in the media dropdown, and regenerate thumbnails individually or in bulk. It also allows you to copy the generated add_image_size PHP code for use in your theme, making it flexible for developers.
Best for: This plugin is best for WordPress users who need to manage and customise image sizes.
What it does well
- ✓Create custom image sizes for your site
- ✓Override theme sizes directly in Media settings
- ✓Regenerate thumbnails in bulk or individually
- ✓Control visibility of image sizes in media dropdown
- ✓Active maintenance by the author
Where it falls short
- •Limited information on advanced features
- •No premium version or paid support mentioned
Verdict
Simple Image Sizes offers practical tools for image management in WordPress. It is a useful option for those looking to tailor image dimensions to their specific needs.
From the developer
Nicolas Juen's own description of Simple Image Sizes, lightly tidied.
This plugin lets you create custom image sizes for your site. Override your theme sizes directly on the Media settings page, regenerate thumbnails, and copy add_image_size PHP for your theme.
ℹ️ Simple Image Sizes, a Mediapapa product
Simple Image Sizes will always remain free. It is actively maintained by me (Nicolas Juen). I’m also building Mediapapa, a complementary plugin focused on understanding and organizing your media library. More on these changes
Features
- Insert images in posts at the right size using your custom sizes.
- Control whether each size appears in the “Insert media” size dropdown.
- Regenerate thumbnails in bulk from Settings → Media, and pick which sizes to rebuild.
- Copy generated
add_image_sizePHP for your theme when you want to keep sizes and deactivate the plugin. - Regenerate from the Media library: one file at a time or with list bulk actions.
- Regenerate from a single attachment’s edit screen.
- Approximate end time and clearer feedback while bulk regeneration runs.