File Formats: JBIG Format (JBG)

Note: Support for this feature requires Document/Medical licensing.

JBIG (JBG) is an industry standard lossless compressed file format for bi-tonal (black and white), grayscale and color images. LEAD's JBIG support is comprehensive and handles the various flavors and bits per pixel as defined by the specification including progressive, where you can store and send multiple representations of images at different resolutions without any extra storage overhead. In order to achieve highest compression ratios available by the JBIG format, LEAD also takes full advantage of all the functional blocks of this robust standard including the Adaptive Arithmetic Encoder, the Adaptive Template Block, the Typical Prediction Block, the Resolution Reduction Block, and the Deterministic Prediction Block. Saving images in a JBIG format results in smaller image files sizes when compared to other industry standard compressed formats such as CCITT G3 or G4.

JBIG compression is superior to LZW, TIFF Group 4 and other 1-bit compression.

The file constants associated with this file format are:

Constant Read Support Write Support Description
Jbig 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 24, 32 BPP 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 24, 32 BPP JBIG.
TifJbig 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 24, 32 BPP 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 24, 32 BPP TIFF with JBIG compression.

Required DLL: Leadtools.Codecs.Jbg.Dll. For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application .

Related Formats: JB2 - JBIG2 Format.

Platform Support

Extension Module Value Win32 Win64 Net32 Net64 Linux Android Apple UWP MimeType Friendly Name
Jbig JBG 115 image/x-jbig JBIG
TifJbig TIF 139 image/tiff TIFF - JBIG Compression

For a complete list for supported file formats, see Summary of All Supported File Formats.

For details of the file formats supported across products and platforms, refer to File Format Comparison Chart.

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