Title: Thumbnail Manager Author: YoOhw Studio Published: 5, Ochobre de 2025 Last modified: 19, Marzu de 2026 --- Guetar plugins ![](https://ps.w.org/thumbnail-manager/assets/banner-772x250.png?rev=3373055) ![](https://ps.w.org/thumbnail-manager/assets/icon.svg?rev=3373055) # Thumbnail Manager By [YoOhw Studio](https://profiles.wordpress.org/yoohw/) [Download](https://downloads.wordpress.org/plugin/thumbnail-manager.1.1.zip) * [Details](https://ast.wordpress.org/plugins/thumbnail-manager/#description) * [Reviews](https://ast.wordpress.org/plugins/thumbnail-manager/#reviews) * [Installation](https://ast.wordpress.org/plugins/thumbnail-manager/#installation) * [Development](https://ast.wordpress.org/plugins/thumbnail-manager/#developers) [Support](https://wordpress.org/support/plugin/thumbnail-manager/) ## Description Thumbnail Manager is a powerful tool to take full control over your WordPress image system. Instead of letting themes and plugins generate dozens of unnecessary thumbnails, you can now: * **Control which sizes are created** * **Remove unused thumbnails safely** * **Regenerate only what you actually need** All in one place. ### 🚀 What it does **1. Regenerate Thumbnails (NEW)** – Regenerate thumbnails based on your current enabled sizes – Works in batches with progress tracking (no timeout issues) – Perfect after disabling unwanted sizes – Ensures your Media Library stays consistent and optimized **2. Prune Unused Thumbnails** – Select sizes you want to **KEEP** – Automatically detect and remove all other generated thumbnails – Supports: – Registered sizes – Orphan `-WxH` files – `.webp`, `.bak`, `@2x`, `-1` variants **3. Orphan File Discovery** – Detect leftover thumbnails no longer registered – Clean legacy sizes from old themes/plugins – Optional aggressive cleanup mode **4. Disable Sizes for Future Uploads** – Prevent unnecessary thumbnails from being generated – Reduce storage usage going forward – Keeps your system lean and predictable **5. Scoped Processing** – Limit operations to specific folders (year/month) – Safer testing on large Media Libraries ### ❌ What it does NOT do * It **does NOT delete original full-size images** * It **does NOT modify image quality or compression** * It **does NOT replace image optimization plugins** * It does not automatically run actions without your confirmation ### 🎯 Who is it for? * WooCommerce stores with heavy image usage * Sites using multiple themes/page builders * Developers cleaning legacy media bloat * Anyone hitting disk limits or slow backups ### Features * 3-tab UI: **Regenerate**, **Prune Files**, **Thumbnail Sizes** * Batch processing with AJAX (no timeouts) * Dry-run preview before deletion * Smart orphan detection * Progress bars + live feedback * Future upload size control * Multisite compatible (run per site) ### Usage ### Regenerate (Recommended flow) 1. Go to **Thumbnail Sizes** 2. Disable unwanted sizes 3. Click **Save changes and run regenerate** 4. Let the system rebuild only the sizes you want ### Prune Files 1. Select sizes to **KEEP** 2. Run **Dry-run** first 3. Review results 4. Switch to **Delete** and execute ### Thumbnail Sizes * Enable/disable sizes for future uploads * Does NOT affect existing images until prune/regenerate is used ### Technical Notes * Uses `intermediate_image_sizes_advanced` to control generation * Uses AJAX batching to avoid server timeout * Safe file targeting via pattern matching * Requires `manage_options` capability ### Privacy This plugin does not collect or transmit any personal data. All operations are performed locally on your server. ## Screenshots * [[ * Regenerate tab with progress system * [[ * Prune Files with dry-run preview * [[ * Thumbnail Sizes configuration panel ## Installation 1. Upload the plugin to `/wp-content/plugins/` or install via WordPress. 2. Activate the plugin. 3. Go to **Tools Thumbnail Manager**. ## FAQ ### Will this delete my original images? No. Only generated thumbnails are affected. ### Should I back up first? Yes. Always back up before deleting files. ### What is “Orphan discovery”? It detects thumbnails on disk that are no longer registered in WordPress. ### When should I use Regenerate? After changing enabled sizes — to rebuild correct thumbnails. ### Does it unregister sizes? No. It prevents generation using filters instead. ### Is it safe for large sites? Yes. Uses batch processing and folder scoping. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “Thumbnail Manager” is open source software. The following people have contributed to this plugin. Contributors * [ YoOhw Studio ](https://profiles.wordpress.org/yoohw/) [Translate “Thumbnail Manager” into your language.](https://translate.wordpress.org/projects/wp-plugins/thumbnail-manager) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/thumbnail-manager/), check out the [SVN repository](https://plugins.svn.wordpress.org/thumbnail-manager/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/thumbnail-manager/) by [RSS](https://plugins.trac.wordpress.org/log/thumbnail-manager/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.1 (Mar 19, 2026) * ✨ Added **Regenerate Thumbnails** feature with batch processing and progress UI * ✨ Added **“Save changes and run regenerate”** workflow * ✨ Set **Regenerate tab as default entry** * ✨ Improved UX flow between Sizes Regenerate Prune * ✨ Added automatic trigger for regenerate after saving sizes * ✨ Improved admin JS handling for multi-tab interaction * 🔧 Refactored internal handlers for regeneration logic * 🔧 Improved performance for large media libraries #### 1.0.1 (Dec 3, 2025) * Added full translation support * Improved UI labels and formatting * Accessibility improvements #### 1.0 (Oct 5, 2025) * Initial release * Prune Files with dry-run and batch deletion * Orphan detection * Disable sizes for future uploads ## Meta * Version **1.1** * Last updated **3 selmanes ago** * Active installations **40+** * WordPress version ** 6.3 or higher ** * Tested up to **6.9.4** * PHP version ** 7.4 or higher ** * Language * [English (US)](https://wordpress.org/plugins/thumbnail-manager/) * Tags * [cleanup](https://ast.wordpress.org/plugins/tags/cleanup/)[images](https://ast.wordpress.org/plugins/tags/images/) [media](https://ast.wordpress.org/plugins/tags/media/)[regenerate](https://ast.wordpress.org/plugins/tags/regenerate/) [thumbnails](https://ast.wordpress.org/plugins/tags/thumbnails/) * [Advanced View](https://ast.wordpress.org/plugins/thumbnail-manager/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/thumbnail-manager/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/thumbnail-manager/reviews/) ## Contributors * [ YoOhw Studio ](https://profiles.wordpress.org/yoohw/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/thumbnail-manager/)