內容簡介
總結：Selective Thumbnail Regenerator 外掛提供了一個方便的方法，讓您重新生成 WordPress 媒體庫中的圖像縮略圖。不同於其他處理整個庫的縮略圖重新生成外掛，這個外掛允許您有選擇性地重新生成在特定年份和月份上傳的圖像的縮略圖。
1.問題：當您使用Selective Thumbnail Regenerator外掛時，可以選擇重新生成哪些圖片的縮略圖？
答案：您可以選擇重新生成在特定年份和月份上傳的圖像的縮略圖。
2.問題：要在WordPress管理面板中使用Selective Thumbnail Regenerator外掛，應該怎麼做？
答案：在WordPress管理面板中，請導航到工具 > 選擇性縮略圖重製。
3.問題：當發生"在所選時間段內找不到圖像"的錯誤時，應該怎麼處理？很可能出了什麼問題？
答案：這表示您的媒體庫中沒有在所選年份和月份上傳的圖像。請嘗試選擇不同的時間段。这可能是由於未上傳符合條件的圖片。
外掛標籤
開發者團隊
② 後台搜尋「Selective Thumbnail Regenerator」→ 直接安裝（推薦）
原文外掛簡介
The Selective Thumbnail Regenerator plugin provides a powerful and user-friendly way to regenerate image thumbnails for WordPress media libraries. Unlike other thumbnail regeneration plugins that blindly process the entire library, this plugin gives you precise control: choose a specific year, month, and even a title keyword to target exactly the images you need.
Key Features
Date & Title Filters – Choose a specific year, month, or search by title to target only the images you need.
Month Status Calendar – A visual 4×3 calendar grid appears when you select a year. Months that have been regenerated are highlighted in green with a checkmark. Clicking a month badge automatically selects it.
Regeneration History Tracking – Completed months are stored in the database and persist across sessions. A “Reset History” button clears all records when needed.
Thumbnail Size Selection – Choose specific registered thumbnail sizes to regenerate instead of all sizes.
Configurable Batch Size – Set how many images are processed per AJAX request (1-20).
Throttle Delay Control – Set a cooldown pause between batches (0-2000 ms) to reduce server load.
Dry Run Mode – Preview which images would be processed without writing any changes to disk.
Automatic Batch Failure Recovery – If a batch crashes, the plugin retries each image individually, isolates the bad one, logs it, and continues with the rest.
Failed Images Log – Detailed table of all failed images including ID, title, and exact failure reason.
Orphaned File Cleanup – Old thumbnail files are deleted from disk before new ones are generated.
Live Terminal Activity Log – Real-time monospace console with timestamped status messages.
Visual Completion Metrics – Five-card summary board: Processed, Successful, Failed, Skipped, Duration.
Cancel Support – Stop the regeneration at any time with a graceful shutdown.
Performance Optimized – Direct indexed SQL query for year selector loading.
Usage
Navigate to Tools > Selective Thumbnail Regenerator.
Select a year from the dropdown. A Month Status Calendar will appear showing which months have already been regenerated.
Optionally select a month – via the dropdown or by clicking a month badge on the calendar.
Optionally enter a title keyword to filter images by name.
Adjust batch size and throttle delay in the Performance Configuration card.
Enable Dry Run Mode to preview results without making changes.
Click “Scan Matching Images” to count how many images match your filters.
Click “Start Regeneration” to begin. Watch the live terminal log for real-time updates.
Review the Job Completion Report and Failed Images Log after the process ends.
Troubleshooting
“No images found for the selected period”
There are no image attachments uploaded during the selected year/month. Try a different time period.
The process is slow
Reduce the throttle delay or increase the batch size if your server can handle more load. Alternatively, increase the delay and reduce batch size if you are getting timeouts.
A batch keeps failing
Enable Dry Run Mode first to verify image accessibility. If specific images crash the server, they will appear in the Failed Images Log after regeneration completes.
