JPEG XR is an approved ISO/IEC International standard (its official
designation is ISO/IEC 29199-2).

JPEG XR started its life in Microsoft Research. It publicly first appeared
as the HD Photo format in Windows Vista.

For web developers, JPEG XR has a large number of interesting features, see
the table below. Some of these are big advantages over other image formats
like JPEG, PNG, OpenEXR, and TIFF.
	- Better Compression (40% smaller than JPEG)
	- Lossless Mode (better compression than PNG)
	- Alpha Channel (compress color lossy and alpha losslessly)
	- Extended Bitdepth (supports 8-, 16-, and 32-bit/channel)
	- Progressive Decode
	- Advanced Decoding Features (tile-based layout, for efficient
	  region-of-interest access.)

WWW: https://jxrlib.codeplex.com/