jbig2dec: jbig2dec (a JBIG2 decoder) jbig2dec: jbig2dec: jbig2dec is a decoder implementation of the JBIG2 image compression jbig2dec: format. jbig2dec: jbig2dec: JBIG2 is designed for lossy or lossless encoding of 'bilevel' (1-bit jbig2dec: monochrome) images at moderately high resolution, and in particular jbig2dec: scanned paper documents. In this domain it is very efficient, offering jbig2dec: compression ratios on the order of 100:1. jbig2dec: jbig2dec: