Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Alternatives to Thumbnail Manager
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Reinvent Retina Imagesv1.0.2
Sharp retina images in one click: regenerate thumbnails, fix missing image sizes, turn off unneeded ones, make WebP/AVIF and free up space.
Regenerate image sizes for all, selected or single images, create only the missing sizes, and clean up leftover size files.
Lists every registered image size — built-in and custom add_image_size() sizes — with width, height and crop mode in a Dashboard widget.
Custom Thumbnail Generator manages image sizes via an AJAX interface. It decouples sizes from themes, ensuring they persist and remain functional.
Hide and manage external download and redirect URLs behind customizable buttons and a clean titanium.download endpoint.
Scan your WordPress media library, identify exact and potential duplicates, and safely replace them with a primary reference image across the site.
Modern role editor, multiple roles, content control and smart role rules for WordPress.
ART4ART Thumbnail Doctorv1.0.0
Regenerate thumbnails, identify which theme or plugin declares each size, and review old image sizes with dry-run, quarantine and restore.
Control which thumbnail sizes WordPress generates, cap oversized uploads, and convert images to WebP — built for shared hosting.