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JPEG XR is the name selected by the JPEG committee for standardization of the HD Photo file format. HD Photo can be considered to be an implementation of the JPEG XR specification. The HD Photo file format is a raster file format developed by Microsoft and it is supported by the Microsoft Photo Info application. This file format is mainly used for cross-platform image exchange, especially with handhelds, PDAs and limited-capability devices. The support for JPEG XR available in Windows Imaging Component, .NET Framework (3.0 or later), Windows Vista or later, Internet Explorer, and a number of other products.

LEADTOOLS supports version 1.0 of this format.

This file format supports QFactor. Possible values can be a value between 2 and 255 (lossy compression), or value 0 (lossless compression).

This file format supports loading and saving JPEG XR lossy and lossless compressions.

The file format does not support multi-page files.

The default extension for JPEG-XR format is: JXR.

The default extension for HDP format is: HDP.

You can read and write 16-bit grayscale. (Document/Medical only).

For more information, please refer to https://msdn.microsoft.com/en-us/library/windows/desktop/hh707223(v=vs.85).aspx.

The file constants associated with this file format are:

Constant	Read Support	Write Support	Description
Hdp	1, 8, 16, 24, 32, 48, 64 BPP	1, 8, 16, 24, 32, 48, 64 BPP	HD Photo - RGB
HdpGray	16 BPP (Grayscale)	16 BPP (Grayscale)	HD Photo - Grayscale
HdpCmyk	32 BPP	32 BPP	HD Photo - CMYK
Jxr	1, 8, 16, 24, 32, 48, 64 BPP	1, 8, 16, 24, 32, 48, 64 BPP	JPEG-XR - RGB Platforms: .NET 2/3, .NET 4, Silverlight, Android and WinRT
JxrGray	16 BPP (Grayscale)	16 BPP (Grayscale)	JPEG-XR - Grayscale Platforms: .NET 2/3, .NET 4, Silverlight and WinRT
JxrCmyk	32 BPP	32 BPP	JPEG-XR - CMYK Platforms: .NET 2/3, .NET 4, Silverlight and WinRT
Jxr420	24 BPP	24 BPP	JPEG-XR - YUV 4:2:0 Platforms: .NET 2/3, .NET 4, Silverlight and WinRT
Jxr422	24 BPP	24 BPP	JPEG-XR - YUV 4:2:2 Platforms: .NET 2/3, .NET 4, Silverlight and WinRT
Jxr	24 BPP	24 BPP	JPEG-XR - YUV 4:4:4 Platforms: .NET 2/3, .NET 4, Silverlight, Android and WinRT

Required DLL: Leadtools.Codecs.Hdp.dll for HD Photo or Leadtools.Codecs.Jxr.dll for JPEG-XR. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application.

For loading or saving CMYK files or LAB color space files, you will also need Leadtools.ColorConversion.dll.

Related Formats: JPG - JPEG Compressed, JP2, J2K - JPEG 2000 Compressed, TIFF - Tagged Image File Format.

Platforms: .NET 2/3, .NET 4

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