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.)
provides command line tools for jpeg xr libs (jxrdecapp & jxrencapp)