Thumbsplus Webp -

You have 5,000 high-res JPEGs taking up 2GB of space. WebP can shrink that to 500MB.

Set your quality slider:

Choose your output directory.

Click Start. ThumbsPlus will decode the JPEG and re-encode as WebP.

This feature adds complete, native read/write support for the WebP image format (including lossy, lossless, animated, and transparency) into ThumbsPlus. It enables users to browse, edit, convert, catalog, and export WebP images seamlessly, leveraging WebP’s superior compression for modern web workflows and efficient archiving. thumbsplus webp

Animated WebP support: Convert GIF or image sequences to animated WebP (set frame delay, loop count).

Ensure .webp files are associated with an image viewer (like Photos or IrfanView) that ThumbsPlus can "ask" for data. Right-click a WebP file > Properties > Opens with > Change to "Windows Photo Viewer" or "Photos." You have 5,000 high-res JPEGs taking up 2GB of space

Cause: ThumbsPlus is using an old internal decoder that conflicts with the OS. Fix: Disable "Use internal graphics formats" in Preferences > Display. Force ThumbsPlus to rely on the Windows GDI+. Set your quality slider:

Let’s clarify the confusing landscape.