Ultimately, the integration of WebP into ThumbsPlus ensures that one of Windows' most enduring productivity tools remains relevant, proving that even legacy systems can adapt to the high-performance standards of the modern web. Files: Thumb not working with WEBP format #825 - GitHub
Once the codec is installed, you must tell ThumbsPlus to look for it.
ThumbsPlus remains a favorite desktop image manager for many photography enthusiasts and digital asset managers due to its powerful batch processing and robust database capabilities. However, because it is legacy software, it does not natively support modern, highly efficient web image formats like Google's WebP. thumbsplus webp
If you are running an older version of ThumbsPlus (v7, v8, or v9), you will likely encounter a "Unknown file format" error when trying to open a WebP image. The format simply did not exist in the mainstream when those versions were architected.
Solution 2: Automated Batch Conversion (The Foolproof Workflow) Ultimately, the integration of WebP into ThumbsPlus ensures
| Issue | Solution | |-------|----------| | No WebP thumbnails | Install WebP codec (e.g., WebP Codec for Windows) or update ThumbsPlus | | “Unknown format” error | Your version is too old – convert externally | | Slow performance | WebP decoding is slower than JPEG; use smaller batch sizes |
[Raw Web Downloads (.webp)] │ ▼ [Google libwebp Tool / XnConvert] ──► (Automated Batch Processing) │ ▼ [High-Quality Output (.png / .jpg)] │ ▼ [ThumbsPlus Database Cataloging] ──► (Full Similarity Search & SQL Tagging enabled) To implement this workflow seamlessly: ThumbsPlus 9.0 Free Download However, because it is legacy software, it does
As of 2025, there is no "perfect" native WebP workflow in ThumbsPlus. You are reliant on OS-level codecs.
What (e.g., v7, v9, v10) are you currently running?