macOS
brew install jbig2enclocal Homebrew formula metadata
sudo port install jbig2encMacPorts ports tree · graphics/jbig2enc/Portfile · Source: api.github.com
brew
Consultez les chemins d'installation, exécutables, métadonnées et notes de sécurité de jbig2enc pour les workflows d'agents IA.
installation
brew install jbig2enclocal Homebrew formula metadata
sudo port install jbig2encMacPorts ports tree · graphics/jbig2enc/Portfile · Source: api.github.com
sudo apk add jbig2encAlpine Linux edge package indexes · jbig2enc · Source: dl-cdn.alpinelinux.org
nix profile install nixpkgs#jbig2encnixpkgs package indexes · pkgs/by-name/jb/jbig2enc/package.nix · Source: api.github.com
sudo apt install jbig2Debian stable package indexes · jbig2 · Source: deb.debian.org
aperçu
JBIG2 encoder (for monochrome documents)
historique
jbig2enc is a command-line JBIG2 encoder for monochrome document images. Its README describes JBIG2 as a bi-level image format that can outperform Group 4 fax compression and says the tool can generate JBIG2 streams, fragments for embedding in PDFs, symbol extraction and classification, refinement coding, and multipage document compression.
The public GitHub repository was created in 2009, and the bundled ChangeLog records releases as early as the 0.21-era work on PDF output and old-book scans. The project grew around Leptonica integration, with repeated releases updating Leptonica compatibility, Windows build support, autotools, CMake, Meson, and the helper script later named jbig2topdf.py.
Homebrew packages the executable as jbig2enc, while Debian and Ubuntu expose the related command through a jbig2 package name. OCRmyPDF documentation treats a JBIG2 encoder as an optional but recommended component for smaller OCR-produced PDFs, which is one of the main reasons the encoder matters in Unix packaging even though the upstream project is small.
Typical usage is document-pipeline work: encode scanned bilevel images with jbig2, then use jbig2topdf.py to wrap the JBIG2 output into a PDF. The README also documents standalone .jb2 output and sample commands for multi-image PDF creation.
jbig2enc sits at an awkward packaging boundary: it is a tiny specialist encoder, but it unlocks much smaller scanned-document PDFs for tools higher in the stack. Packagers also care about its history because JBIG2 patent concerns long affected distribution decisions, while later releases focused on build-system portability and memory-safety fixes.
posture de sécurité
narrow executable package without higher-risk signals.
risque vert · confiance faible · appliance
Avant une utilisation sans surveillance par un agent, vérifiez si l'outil lit des identifiants en clair, écrit un état distant, publie des artefacts ou lance des plugins.
exécutables
| Commande | Type | Exposition | Note |
|---|---|---|---|
jbig2 | cli | exécutable global | |
jbig2topdf.py | cli | exécutable global |
fraîcheur
Ces signaux séparent l'âge de génération de la page, l'activité du gestionnaire de paquets et la comparaison avec les versions amont. Un retard de version n'est signalé que lorsqu'une URL de preuve et des versions comparables sont présentes.
https://github.com/agl/jbig2enc
métadonnées d'installation
| Clé du paquet | brew:jbig2enc |
|---|---|
| Version | 0.32 |
| Gestionnaire de paquets | Homebrew |
| Page du gestionnaire de paquets | https://formulae.brew.sh/formula/jbig2enc |
| Page d'accueil | https://github.com/agl/jbig2enc |
| Dépôt | https://github.com/agl/jbig2enc |
| Docs amont | https://github.com/agl/jbig2enc/blob/master/README.md |
| Licence | Apache-2.0 |
| Archive source | https://github.com/agl/jbig2enc/archive/refs/tags/0.32.tar.gz |
| Dernière mise à jour | 2026-06-19T22:36:09Z |
| Pulse | updated |
| Dépendances | giflib, jpeg-turbo, leptonica, libpng, libtiff, webp |
| Dépendances de compilation | autoconf, automake, libtool, pkgconf |
| Bouteille | disponible (sur arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| post-install Homebrew | non défini |
| Service | aucun déclaré |
faits du registre
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | jbig2enc |
| Version Scheme | 0 |
| Revision | 0 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
correspondances dans les bases sources
Les correspondances proviennent d’index externes de gestionnaires de paquets et restent séparées des liens de paquets Automic Vault locaux.
jbig2 0.30-1
encoder for JBIG2 - command-line tool
https://github.com/agl/jbig2enc
sudo apt install jbig2libjbig2enc-dev 0.30-1
encoder for JBIG2 - development headers
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc-devlibjbig2enc0t64 0.30-1
encoder for JBIG2 - libraries
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc0t64jbig2enc
nix profile install nixpkgs#jbig2encjbig2 0.29-2.1build1
encoder for JBIG2 - command-line tool
https://github.com/agl/jbig2enc
sudo apt install jbig2libjbig2enc-dev 0.29-2.1build1
encoder for JBIG2 - development headers
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc-devlibjbig2enc0t64 0.29-2.1build1
encoder for JBIG2 - libraries
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc0t64jbig2enc 0.30-r0
JBIG2 Encoder
https://github.com/agl/jbig2enc
sudo apk add jbig2encjbig2enc-dev 0.30-r0
JBIG2 Encoder (development files)
https://github.com/agl/jbig2enc
sudo apk add jbig2enc-devjbig2enc-doc 0.30-r0
JBIG2 Encoder (documentation)
https://github.com/agl/jbig2enc
sudo apk add jbig2enc-docjbig2enc-static 0.30-r0
JBIG2 Encoder (static library)
https://github.com/agl/jbig2enc
sudo apk add jbig2enc-staticjbig2enc
sudo port install jbig2encpiste source
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View the package source record on GitHub.