To effectively use WebP files within ThumbsPlus, follow these steps: Verify Version
Honestly? If you handle thousands of WebP files, forcing ThumbsPlus to support them is like teaching a diesel engine to run on gasoline. Instead, create a using ThumbsPlus for management and external tools for conversion . thumbsplus webp
The Cerious Software development cycle is notoriously slow. ThumbsPlus v10 was released years ago, and v11 has been "in development" for a long time. There is no official roadmap for deep WebP support, including: To effectively use WebP files within ThumbsPlus, follow
If you cannot upgrade ThumbsPlus: