WebP Image Support

This plugin was added in version 2.0.0.

The WebP plugin is an extension to ImageProcessor that allows processing of images with Google’s WebP format.

This is a new image format that provides lossless and lossy compression for images on the web. WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller in size compared to JPEG images at equivalent SSIM index.

WebP supports lossless transparency (also known as alpha channel) with just 22% additional bytes. Transparency is also supported with lossy compression and typically provides 3x smaller file sizes compared to PNG when lossy compression is acceptable for the red/green/blue color channels.

WebP support is added by adding an implementation of ISupportedImageFormat to the solution for ImageProcessor to load automatically.

Requires msvcr120.dll from the Visual C++ Redistributable Package for Visual Studio 2013 to be installed on the server.

If you are using version 1.0.2 or lower it instead requires msvcr110.dll from the Visual C++ Redistributable Package for Visual Studio 2012 to be installed.