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About JPEG Network Graphics
JNG (JPEG Network Graphics) is a JPEG-based graphics file format closely related to PNG.
JNG files embed an 8-bit or 12-bit JPEG datastream to store color data, and may embed another datastream (1 to 16 bit PNG, or 8 bit JPEG grayscale image) for transparency information. The transparency information inside a JNG file (alpha channel) can be saved either in lossless PNG format, or in lossy JPEG format. The chunk based structure of JNG files is almost the same as that of PNG files (only slightly different signature and using different chunks). |
Supported by converters
Convertability
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