file-jbig2pdf

GIMP 3.0 plug-in for exporting lossless JBIG2-encoded PDF files

Usage

file-jbig2pdf has only been tested on Linux. It requires jbig2enc to be installed, and its jbig2 and jbig2topdf.py commands to be available on PATH.

Important: file-jbig2pdf requires jbig2topdf.py to have support for ‘standalone’ JBIG2 images, which was implemented in jbig2enc commit bc9ec13. At the time of writing (November 2024), this is available only in the git version of jbig2enc (e.g. Arch Linux jbig2enc-git).

Install file-jbig2pdf.py and jbig2topdf_lossless.py under $HOME/.config/GIMP/3.0/plug-ins/file-jbig2pdf/ and ensure that file-jbig2pdf.py is executable.

Set up your GIMP image as desired in the standard fashion for PDF export (one layer per page, bottom layer first) and under File → Export As…, expand Select File Type (By Extension) and select Portable Document Format (JBIG2).

Licence

Copyright © 2024 Lee Yingtong Li (RunasSudo)

file-jbig2pdf.py loosely adapted from GIMP file-openraster.py – Copyright © 2009 by Jon Nordby <jononor@gmail.com>, licensed under the GPLv3
In turn based on MyPaint source code by Martin Renold

jbig2topdf_lossless.py adapted from jbig2enc by Adam Langley agl@imperialviolet.org - Copyright (C) 2006 Google Inc., licensed under Apache v2

The file-jbig2pdf project is licensed under the GNU General Public License version 3 or later.