GoodBoyDigital/pixi.js — pull request #719 by iLaurens (2014-04-26 01:07:36+00:00)
Title: Added webp as a supported image format

Added webp as a supported image format. This allows you to use webp images so you can benefit from graphics with a smaller file size compared to other image formats. By using webp for your image assets you can reduce megabytes from a single game.

More info on webp: https://developers.google.com/speed/webp/?csw=1