NAME

       jbig2dec - File format converter specialized in JBIG2 decoding

SYNOPSIS

       jbig2dec [options] file.jbig2
       jbig2dec [options] global-stream page-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 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 global-stream argument  to  request
       the embedded parser.

OPTIONS

       The options are as follows:

       -o file
              Store  the  decoded  output  in  file.   Defaults  to  the  input  with a different
              extension.  Set to - for standard output.

       -t type
              Force a particular output file format. Supported are png and pbm.

       -d or --dump
              Print the structure of the JBIG2 file rather than explicitly decoding it.

       --hash Print a hash of the decoded document.

       -q or --quiet
              Suppress warnings and other diagnostic output.

       -v or --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.

       --version
              Show program version information.

       -h or --help
              Show usage summary.

REPORTING BUGS

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

       Contact the developers at the IRC channel #ghostscript at freenode.net or via the  mailing
       list <gs-devel@ghostscript.com>.

AUTHOR

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