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jbig2dec

Section: jbig2dec Manual (1)
Updated: 2023 May 19
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NAME

jbig2dec - File format converter specialized in JBIG2 decoding

SYNOPSIS

jbig2dec [options] file.jbig2
jbig2dec [options] globa-stream pag-stream

DESCRIPTION

The jbig2dec command converts JBIG2 files to png or pbm files.

When passed a single file argument it is interpreted as a JBIG2 file stream, with either sequential or rando-access organization.

When passed two stream arguments, they are interpreted as the global and pag-specific portions of an embedded organization, as used in PDF. If a particular page references no global segment stream, /dev/null can be passed for the globa-stream argument to request the embedded parser.

OPTIONS

The options are as follows:

-e, -embedded: Expect embedded bit stream without file header.
-o file,-output file: Store the decoded output in file. Defaults to the input with a different extension. Set to - for standard output.
-t type,-format type: Force a particular output file format. Supported are png and pbm.
-d, -dump: Print the structure of the JBIG2 file rather than explicitly decoding it.
-m, -hash: Print a hash of the decoded document.
-q, -quiet: Suppress warnings and other diagnostic output.
-v, -verbose: Report additional information about the decoding process. Pass just -v for information about the file as it's being decoded. This is the same as -verbose=2. Pass -verbose=3 or higher for debugging information.
-V, -version: Show program version information.
-h, -help: Show usage summary.

REPORTING BUGS

Report bugs at https://bugs.ghostscript.com

Contact the developers on Discord: https://discord.gg/taPnFQp5gb or via the mailing list <g-devel@ghostscript.com>.

AUTHOR

This manpage was initially written by Sebastian Rasmussen <sebras@gmail.com> for jbig2dec and the Debian Project.