From: Alexey S. <ac...@gm...> - 2015-10-04 06:49:06
|
I want propose wPNG extensions for PNG format. Adds: wdAT, wfDT, maSK chunks Why need? This extension can improve compression through embed foreign format image. Also you can distribute with PNG - WebP and other images in future. What I can do? This extension extends features of embedded images by PNG chunks. Also can apply alpha channel for embedded image (for JPEG). Limitations? Yes. Embedded images can't be animated. Also you can embed only one image, and if APNG, frames must be same format. You can not use SVG. What can be replaced? JNG format can be replaced by wPNG extended png image, except JDAA support. Backward compatibility? Yes, wPNG compatible with PNG. Specification: http://acterhd.github.io/AGF-draft/wPNG.html Source code: https://github.com/acterhd/AGF-draft |