Thumbnail Manager
| 开发者 | yoohw |
|---|---|
| 更新时间 | 2026年8月1日 12:35 |
| 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:
- Review every registered image size and decide which sizes WordPress should generate for future uploads.
- Generate only missing sizes or force-regenerate selected image attachments.
- Process all images, selected attachments, the current year, or selected upload folders.
- Review recommendations based on protected WordPress sizes, WooCommerce-related sizes, attachment metadata, and common content references.
- Resume or cancel persistent jobs and review recent job results and per-item errors.
- Choose the image sizes to keep.
- Scan all uploads or selected year and month folders.
- Review the immutable, hashed manifest and estimated storage total.
- Explicitly approve the reviewed manifest.
- Delete only those approved generated files in resumable batches.
-WIDTHxHEIGHT pattern but cannot be mapped reliably to attachment metadata are reported and skipped by default.
Scope
Thumbnail Manager controls image-size generation, regeneration, and cleanup. It does not compress images, convert them to WebP or AVIF, configure a CDN, offload media, or unregister a size from the theme or plugin that originally registered it.
Recommendations are an informed starting point. Verify the sizes used by the active theme, plugins, WooCommerce templates, and custom code before disabling generation or approving deletion.
安装:
- Install the plugin through the WordPress Plugins screen, or upload it to
/wp-content/plugins/thumbnail-manager/. - Activate Thumbnail Manager.
- Go to Tools > Thumbnail Manager.
- Run Recommendations and review the result for your theme and plugins.
- Configure future Thumbnail Sizes before regenerating or cleaning files.
- Back up the uploads directory before approving cleanup on a production site.
常见问题:
Can I regenerate thumbnails after changing image sizes?
Yes. Only Missing creates absent sub-sizes. Force Regenerate rebuilds the selected attachments more comprehensively from an available original image source.
Can it clean unused generated thumbnails?
Yes. Prune Files first builds a manifest for review. Nothing is deleted until the scan finishes and an administrator explicitly approves that manifest.
Will it delete original images?
No. Original full-size uploads are protected. Cleanup candidates must also pass path and attachment checks.
Can I scan several upload folders?
Yes. Search for and select multiple years or months. Selecting an entire year automatically covers its month folders.
Is it suitable for a large Media Library?
Yes. Recommendations, regeneration, scanning, manifest creation, and deletion use persistent jobs and bounded batches that can resume after interruption.
What happens if I close the page during a job?
The job state remains in the database. Reload the admin page to resume it. Cancelling stops future batches while retaining an audit record.
Does orphan discovery delete disk-only files?
No. Unmapped disk-only filename matches are reported and skipped by default. Only approved, validated manifest items are deleted.
Is it safe for WooCommerce sites?
The plugin recognizes WooCommerce-related sizes in Recommendations, but storefront requirements vary. Verify the sizes used by your store before disabling or pruning them.
Does disabling a size unregister it from a theme or plugin?
No. It changes which registered sizes WordPress generates for future uploads. The original registration remains in place.
更新日志:
- Added persistent jobs with ownership, expiry, cancellation, locking, resume, and per-item errors.
- Split cleanup into scanning, immutable manifest review, explicit approval, and resumable deletion.
- Added searchable multi-folder selection and limited scans to selected upload folders.
- Improved force regeneration, batched Recommendations, admin responsiveness, and automated release coverage.
changelog.txt for the complete release history.