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- .TH jbig2dec 1 "2023 May 19" "Version 0.20" "jbig2dec Manual"
- .SH NAME
- jbig2dec \- File format converter specialized in JBIG2 decoding
- .SH SYNOPSIS
- .B jbig2dec
- .RI [ options ]
- .I file.jbig2
- .br
- .B jbig2dec
- .RI [ options ]
- .I global-stream page-stream
- .SH DESCRIPTION
- The
- .B jbig2dec
- command converts JBIG2 files to png or pbm files.
- When passed a single
- .I file
- argument it is interpreted as a JBIG2 file stream, with either
- sequential or random-access organization.
- When passed two stream arguments, they are interpreted as the
- global and page-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
- .I global-stream
- argument to request the embedded parser.
- .SH OPTIONS
- The options are as follows:
- .TP
- .BR -e ", " --embedded
- Expect embedded bit stream without file header.
- .TP
- .BI -o " file" ", --output" " file"
- Store the decoded output in
- .IR file .
- Defaults to the input with a different extension.
- Set to \fI-\fR for standard output.
- .TP
- .BI -t " type" ", --format" " type"
- Force a particular output file format. Supported are \fIpng\fR and
- \fIpbm\fR.
- .TP
- .BR -d ", " --dump
- Print the structure of the JBIG2 file rather than explicitly decoding it.
- .TP
- .BR -m ", " --hash
- Print a hash of the decoded document.
- .TP
- .BR -q ", " --quiet
- Suppress warnings and other diagnostic output.
- .TP
- .BR -v ", " --verbose
- Report additional information about the decoding process.
- Pass just \fB-v\fR for information about the file as it's being decoded.
- This is the same as \fB--verbose=2\fR.
- Pass \fB--verbose=3\fR or higher for debugging information.
- .TP
- .BR -V ", " --version
- Show program version information.
- .TP
- .BR -h ", " --help
- Show usage summary.
- .SH REPORTING BUGS
- Report bugs at https://bugs.ghostscript.com
- Contact the developers on Discord: https://discord.gg/taPnFQp5gb
- or via the mailing list <gs-devel@ghostscript.com>.
- .SH AUTHOR
- This manpage was initially written by Sebastian Rasmussen
- <sebras@gmail.com> for jbig2dec and the Debian Project.
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