Thumbsplus Webp [ Full • Checklist ]

WebP lossy images are 25–34% smaller than comparable JPEG images [1].

Note: While this method may allow ThumbsPlus to generate a static thumbnail graphic, advanced batch-processing features (like converting a WebP directly to a TIFF via the ThumbsPlus Batch Wizard) may still be limited by the software's internal engine. Alternatives: Batch Converting WebP Files

If thumbnails do not appear, go to Options > Thumbnail and ensure that "Use high-quality scaling" is checked. You may need to rebuild thumbnails ( Edit > Rebuild Thumbnails ).

# Update ThumbsPlus to point to proxy (requires DB write) cursor.execute("UPDATE images SET proxy_path = ? WHERE filename = ?", (proxy_jpg, filename)) thumbsplus webp

conn.commit() conn.close()

This feature adds complete, native read/write support for the 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.

, you might find it easier to convert WebP files to a standard format like JPG or PNG using a dedicated converter before cataloging them in ThumbsPlus. Alternatives for WebP Management WebP lossy images are 25–34% smaller than comparable

The fastest way to get WebP files to display in Windows Explorer—and subsequently in ThumbsPlus—is to ensure your Windows system handles them correctly.

If you are using ThumbsPlus v10/v11 and still cannot see WebP thumbnails, you likely need to register the WIC (Windows Imaging Component) codec. Unlike macOS, Windows does not ship with native WebP decoding. ThumbsPlus relies on the OS's codec infrastructure.

Before manipulating ThumbsPlus to work with WebP, you must understand why this format matters. You may need to rebuild thumbnails ( Edit

Click on the format options. Choose between Lossless (best for graphics, logos, and screenshots) or Lossy (best for photographs). If choosing lossy, a quality slider between 75 and 85 typically yields the best balance between file size reduction and visual fidelity.

This article explores how ThumbsPlus interacts with the WebP format, the limitations users face as of 2026, and the best workarounds for managing your WebP image libraries. What is WebP?

If you are using Windows 10 or 11, the ability to display WebP images in ThumbsPlus often relies on installing Microsoft’s WebP Image Extensions.