Title: Thumbnail Manager Author: YoOhw Studio Published: 5. Oktober 2025 Last modified: 9. Mai 2026 --- Plugins suchen ![](https://ps.w.org/thumbnail-manager/assets/banner-772x250.png?rev=3517019) ![](https://ps.w.org/thumbnail-manager/assets/icon-256x256.png?rev=3517019) # Thumbnail Manager Von [YoOhw Studio](https://profiles.wordpress.org/yoohw/) [Herunterladen](https://downloads.wordpress.org/plugin/thumbnail-manager.1.2.zip) * [Details](https://de.wordpress.org/plugins/thumbnail-manager/#description) * [Rezensionen](https://de.wordpress.org/plugins/thumbnail-manager/#reviews) * [Installation](https://de.wordpress.org/plugins/thumbnail-manager/#installation) * [Entwicklung](https://de.wordpress.org/plugins/thumbnail-manager/#developers) [Support](https://wordpress.org/support/plugin/thumbnail-manager/) ## Beschreibung 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. Recommendations** – Get recommendations for commonly safe thumbnail sizes – Highlights WordPress core and WooCommerce-related sizes – Helps identify likely unused custom sizes – Quickly apply suggested sizes before regenerating or pruning **6. 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 * 4-tab UI: **Regenerate**, **Recommendations**, **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) * Recommendation engine for safer cleanup decisions * WooCommerce-aware protected size detection * Apply recommended sizes with one click ### Usage ### Recommended Workflow 1. Go to **Recommendations** 2. Scan media usage suggestions 3. Apply recommended sizes 4. Go to **Thumbnail Sizes** 5. Save changes and run regenerate 6. Review and clean old thumbnails in **Prune Files** ### 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 * [[ * Recommendations tab with suggested sizes * [[ * 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. ### Are Recommendations fully automatic? No. Recommendations are based on protected/core thumbnail sizes and common usage patterns. Always review suggestions and use Dry-run before deleting 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. ## Rezensionen Für dieses Plugin gibt es keine Rezensionen. ## Mitwirkende und Entwickler „Thumbnail Manager“ ist Open-Source-Software. Folgende Menschen haben an diesem Plugin mitgewirkt: Mitwirkende * [ YoOhw Studio ](https://profiles.wordpress.org/yoohw/) [Übersetze „Thumbnail Manager“ in deine Sprache.](https://translate.wordpress.org/projects/wp-plugins/thumbnail-manager) ### Interessiert an der Entwicklung? [Durchstöbere den Code](https://plugins.trac.wordpress.org/browser/thumbnail-manager/), sieh dir das [SVN-Repository](https://plugins.svn.wordpress.org/thumbnail-manager/) an oder abonniere das [Entwicklungsprotokoll](https://plugins.trac.wordpress.org/log/thumbnail-manager/) per [RSS](https://plugins.trac.wordpress.org/log/thumbnail-manager/?limit=100&mode=stop_on_copy&format=rss). ## Änderungsprotokoll #### 1.2 (May 9, 2026) * ✨ Added **Recommendations** tab for safer thumbnail cleanup decisions * ✨ Added recommendation engine for WordPress core and WooCommerce-related sizes * ✨ Added one-click “Apply recommended sizes” * ✨ Added improved workflow: Recommendations Sizes Regenerate Prune * ✨ Added scoped regenerate processing: - All media - Current year - Specific uploads folders - Specific attachment IDs * ✨ Added “Force regenerate all” option * ✨ Added “Only generate missing thumbnails” optimization * ✨ Added “Save changes and run regenerate” workflow * ✨ Added Regenerate as the default tab * 🔧 Improved regenerate batching and UI progress handling * 🔧 Improved AJAX architecture and tab interaction handling * 🔧 Improved overall media optimization workflow for large sites #### 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 **1.2** * Zuletzt aktualisiert **vor 3 Wochen** * Aktive Installationen **60+** * WordPress-Version ** 6.3 oder höher ** * Getestet bis **6.9.4** * PHP-Version ** 7.4 oder höher ** * Sprache * [English (US)](https://wordpress.org/plugins/thumbnail-manager/) * Schlagwörter * [cleanup](https://de.wordpress.org/plugins/tags/cleanup/)[images](https://de.wordpress.org/plugins/tags/images/) [media](https://de.wordpress.org/plugins/tags/media/)[regenerate](https://de.wordpress.org/plugins/tags/regenerate/) [thumbnails](https://de.wordpress.org/plugins/tags/thumbnails/) * [Erweiterte Ansicht](https://de.wordpress.org/plugins/thumbnail-manager/advanced/) ## Bewertungen Es wurden noch keine Rezensionen eingereicht. [Your review](https://wordpress.org/support/plugin/thumbnail-manager/reviews/#new-post) [Alle Rezensionen anzeigen](https://wordpress.org/support/plugin/thumbnail-manager/reviews/) ## Mitwirkende * [ YoOhw Studio ](https://profiles.wordpress.org/yoohw/) ## Support Behobene Probleme in den letzten zwei Monaten: 1 von 1 [Support-Forum anzeigen](https://wordpress.org/support/plugin/thumbnail-manager/)