Simple Image Sizes
View on WordPress.orgScores higher than 90% of indexed plugins
About
This plugin lets you create custom image sizes for your site. Override your theme sizes directly on the Media settings page, regenerate thumbnails, an …
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What It Does
Simple Image Sizes adds a dedicated interface inside the WordPress Media settings where you can define custom image dimensions and override the sizes your theme registers. It also includes a thumbnail regeneration tool that rebuilds existing uploads to match your new size configuration. In practice, it gives site owners direct control over how every image variant is cropped, sized, and stored without editing functions.php.
Who It's For
This plugin suits visual-heavy WordPress sites that need precise image dimensions across multiple layouts, such as photography portfolios, real estate listings, e-commerce catalogues, and interior design showcases. It is especially useful for site owners who want to tweak registered theme sizes without writing code or hiring a developer. Developers maintaining client sites will also benefit from the regeneration tool when migrating themes or redesigning layouts.
Who Should Skip It
If your theme already exposes the image sizes you need or you rarely change layout dimensions, this plugin is overkill and adds an extra settings screen you do not need. Sites with only a handful of images and no custom display requirements will get more value from a simpler image optimization plugin like Imsanity.
The Bottom Line
Simple Image Sizes earns an overall quality score of 82.7 out of 100 and delivers exactly what its name promises: a clean interface for custom image sizes plus reliable regeneration. The zero support thread activity is a real concern if you ever get stuck, so less technical users should be prepared to rely on documentation. For developers and image-conscious site owners, it remains a focused, well-maintained tool that does one job well.
Related Plugins
Pick Autoptimize instead if your priority is asset and script optimization rather than controlling image dimensions.
Pick Imsanity if your main concern is automatically downsizing oversized uploaded images rather than defining custom size variants.
Pick Firelight Lightbox if you need a polished lightbox display layer for your images instead of size management.
Pick WebP Express if your goal is serving next-generation image formats for performance rather than defining custom size variants.
Pick Responsive Lightbox & Gallery if you want gallery presentation features alongside image display rather than size control.