Smart Thumbnails GW
An intelligent image management plugin that registers custom sizes for each post type and regenerates them only when needed for featured images.
Use with caution
Smart Thumbnails GW works, but test it on a staging site before relying on it in 2026. Was last updated 4 months ago, and scores 42/100 on our health check.
- Small user base (<10 active installs)
- Very few reviews so far
- Only tested up to WordPress 6.8 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & supportDaily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Smart Thumbnails GW stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| custom sizes | >100 |
| image | >100 |
| regenerate thumbnails | #74 |
| thumbnail | >100 |
| woocommerce | >100 |
About Smart Thumbnails GW
From the official readme · v2.2.3Description
Are you tired of WordPress creating dozens of unused thumbnail sizes for every image you upload?
By default, WordPress and many themes register multiple image sizes and generate them for every single upload, filling your server with thousands of files you will never use. This wastes disk space and makes managing your media library difficult.
Smart Thumbnails GW solves this problem.
This plugin stops WordPress from creating unnecessary files and gives you precise control. Its intelligent logic generates custom sizes only for Featured Images when a post is saved. Images uploaded into your post content won’t create any extra thumbnails, saving you valuable server space.
Control exactly which sizes are created for each post type (posts, pages, products, etc.), clean up unused images automatically, and regenerate thumbnails only when you need to.
Installation
- Upload the
smart-thumbnails-gwfolder to the/wp-content/plugins/directory. - Activate the plugin through the ‘Plugins’ menu in WordPress.
- Go to Settings -> Smart Thumbnails to configure the plugin and define your custom image sizes.
Frequently asked questions
I defined a new size. Why aren’t my old featured images showing it?
You need to regenerate thumbnails for existing images. Go to the plugin’s settings page, click on the “Regenerate Thumbnails” tab, select the post type, and start the regeneration process.
Will this plugin create sizes for images I upload to the post content?
No. To save server space, this plugin is designed to create custom sizes only for Featured Images. Images uploaded to the content area will not have custom sizes generated.
Can I define sizes for images uploaded directly to the Media Library?
Yes. In the “Image Sizes” tab, you will see a post type called “Media” (attachment). Any sizes you define there will be created for images uploaded directly to the Media Library.
Changelog
2.2.0
- Major Architecture Overhaul (Enterprise Standard).
- Implemented Cursor-based pagination for regeneration (High Performance).
- Improved Security with strict sanitization and validation.
- Fixed PHP 8+ compatibility warnings.
2.1.0
- Refactored code to meet WordPress.org standards.
- Replaced short prefixes with a unique prefix.
1.0.0
- Initial release.
Screenshots
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Smart Thumbnails GW alternatives
All custom sizes plugins →| Rank | Plugin | Active installs |
|---|---|---|
| 1 |
Simple Image Sizes
This plugin lets you create custom image sizes for your site. Override your theme sizes…
|
60K+ |
FAQ
Smart Thumbnails GW: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 5, 2026
Is Smart Thumbnails GW free?
Yes. Smart Thumbnails GW is free to download and use from the official WordPress.org plugin directory.
Is Smart Thumbnails GW safe to use in 2026?
Smart Thumbnails GW works, but test it on a staging site before relying on it in 2026. Was last updated 4 months ago, and scores 42/100 on our health check.
How many websites use Smart Thumbnails GW?
Smart Thumbnails GW is active on <10 WordPress websites and has been downloaded 613 times since it launched in October 2025. It was downloaded 61 times in the last 30 days.
Does Smart Thumbnails GW work with WordPress 7.1?
Smart Thumbnails GW is officially tested up to WordPress 6.8.10, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does Smart Thumbnails GW need?
Smart Thumbnails GW requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Smart Thumbnails GW last updated?
The latest version, 2.2.3, was released on June 6, 2026 (4 months ago).
Who makes Smart Thumbnails GW?
Smart Thumbnails GW is developed and maintained by Mohammadreza Maghsoudipour.
What are the best alternatives to Smart Thumbnails GW?
The most popular alternatives to Smart Thumbnails GW are Simple Image Sizes (60K+ installs).
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