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Regenerate Thumbnails
Overview
Regenerates attachment metadata and intermediate sizes across the Media Library via a controlled AJAX process (one image at a time). Includes Start/Stop controls, a progress UI, and an activity log. Respects Disable Thumbnail Generation exclusions—if all intermediates are disabled, regeneration will not create them. Safe to re-run; do not close the modal while a run is in progress.
- Sites that added or changed image sizes and need derivatives rebuilt
- Developers after registering custom sizes or switching themes
- Anyone cleaning up missing or outdated thumbnails
Features
Library-wide regeneration
One-at-a-time processing
Progress and activity log
Honors size disables
Start / Stop controls
Use Cases
- After a theme switchNew theme sizes appear only for new uploads until you regenerate the library.
- After adding custom sizesCreate hero, card, or social crops for every existing product or post image.
- Fixing missing derivativesRepair attachments that show empty size lists in the Image Sizes Panel.
Frequently Asked Questions
What does Regenerate Thumbnails do in WP PowerSuite?
It rebuilds WordPress intermediate image sizes for Media Library attachments with progress tracking.
How do I enable Regenerate Thumbnails in WP PowerSuite?
Enable the module, open its UI, then Start the regeneration run and keep the modal open until it finishes.
Who should use Regenerate Thumbnails?
Anyone who changed image sizes or themes and needs existing media to catch up.
Does it respect Disable Thumbnail Generation?
Yes. Excluded or fully disabled sizes will not be generated during the run.
Is Regenerate Thumbnails a free or Pro module in WP PowerSuite?
It is included (free) with WP PowerSuite.
