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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.)
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