This plugin can safely and intelligently scan and optimize the media library, precisely removing unused and duplicate media files, and supports batch deletion. It has the ability to optimize large data, and the processing process consumes very little server memory.

Image Optimizer Lite is a WordPress plugin that optimizes, converts images to WebP or AVIF on upload, and resizes them to specified dimensions.

WordPress media library manager: track usage, find duplicates, remove unused files, fix metadata and optimize images. Free.