Thumbnail Manager
| 开发者 | yoohw |
|---|---|
| 更新时间 | 2026年6月12日 12:58 |
| PHP版本: | 7.4 及以上 |
| WordPress版本: | 7.0 |
| 版权: | GPLv2 or later |
| 版权网址: | 版权信息 |
详情介绍:
- Regenerate WordPress thumbnails for existing image attachments
- Generate only missing thumbnails or force-regenerate all selected images
- Disable unwanted registered image sizes for future uploads
- Prune unused thumbnails while keeping selected sizes
- Run Dry-run previews before deleting generated thumbnail files
- Detect legacy thumbnail sizes stored in attachment metadata
- Report disk-only orphan matches without deleting unmapped files by default
- Scan recommendations based on protected sizes, WooCommerce-related sizes, generated metadata, and common content references
- Process large Media Libraries with cursor-based AJAX queues and folder scoping
- Manage everything from Tools > Thumbnail Manager
- Clean WordPress thumbnail bloat after theme or page builder changes
- Regenerate thumbnails after changing Media Settings or custom image sizes
- Reduce WooCommerce image storage by reviewing generated product thumbnails
- Disable image sizes that should no longer be created for new uploads
- Rebuild missing thumbnails after migration, restore, or failed image processing
- Audit legacy thumbnail sizes left behind by old themes and plugins
- Original full-size images are not deleted
- Delete mode requires a fresh delete token and a completed scan
- Dry-run mode never deletes files
- Cleanup targets files from attachment metadata
- Disk-only orphan matches are reported, not deleted by default
- Paths are validated under the WordPress uploads directory before deletion
- Attachment metadata is updated after generated thumbnail sizes are removed
- It does not compress or optimize image quality
- It does not replace image optimization or CDN plugins
- It does not automatically delete media without confirmation
- It does not delete original uploaded images
- It does not unregister image sizes from themes or plugins
安装:
- Upload the plugin to
/wp-content/plugins/thumbnail-manager/or install it from WordPress.org. - Activate the plugin in WordPress.
- Go to Tools > Thumbnail Manager.
常见问题:
Can I regenerate WordPress thumbnails after changing image sizes?
Yes. Use the Regenerate tab after changing Media Settings, switching themes, enabling WooCommerce image sizes, or saving different thumbnail size settings.
Can this clean unused thumbnails from the Media Library?
Yes. Use Prune Files to select the sizes you want to keep, run Dry-run, review the matched generated files, and then delete the reviewed thumbnail files in batches.
Will Thumbnail Manager delete original images?
No. Original full-size attachment files are protected. The plugin targets generated thumbnail files from attachment metadata and validates paths before deletion.
Does orphan discovery delete files that are not in WordPress metadata?
No. Disk-only -WxH matches that cannot be mapped to attachment metadata are reported and skipped by default. Metadata-backed legacy sizes can be cleaned after review.
Is it safe for WooCommerce sites?
Thumbnail Manager detects WooCommerce-related thumbnail sizes in recommendations and lets you review them before disabling, regenerating, or pruning. Always run Dry-run before deleting thumbnails on a live store.
Is it safe for large Media Libraries?
Regenerate and prune scans use cursor-based queues, AJAX batches, progress tracking, and optional folder scoping. Disk-only orphan reporting still depends on the size of the selected uploads folder, so start with a smaller folder on very large sites.
Does it optimize or compress images?
No. Thumbnail Manager controls image sizes, regeneration, and cleanup. Use a dedicated image optimization plugin for compression, WebP conversion, CDN, or quality changes.
Does it unregister image sizes from themes or plugins?
No. It prevents selected sizes from being generated for future uploads through WordPress filters. The theme or plugin that registered the size remains unchanged.
更新日志:
- Hardened prune/delete safety checks for tokens, scan completion, uploads path validation, and original image protection
- Refactored prune into a metadata-aware cursor scan instead of filesystem-wide regex deletion
- Updated delete batches to remove stale attachment size metadata after thumbnail files are deleted
- Added disk-only orphan reporting while keeping unmapped files out of the delete queue by default
- Escaped dynamic admin JavaScript output, localized admin strings, and improved ARIA states
- Added asset versioning and WP-CLI prune safety smoke tests
- Added Recommendations tab for safer thumbnail cleanup decisions
- Added WooCommerce-aware size recommendations and one-click apply workflow
- Added scoped regenerate processing, force regenerate, and only-missing options
- Improved regenerate batching and admin progress handling
- Added Regenerate Thumbnails with batch processing
- Improved the Sizes, Regenerate, and Prune workflow
- Added translation support
- Improved UI labels and formatting
- Added accessibility improvements
- Initial release
- Added Prune Files with Dry-run and batch deletion
- Added orphan detection
- Added controls for future thumbnail generation