macOS
Homebrew已验证 · 100%
brew install jbig2enclocal Homebrew formula metadata
MacPorts已验证 · 94%
sudo port install jbig2encMacPorts ports tree · graphics/jbig2enc/Portfile · 来源: api.github.com
安装
其他安装命令
Linux
Alpine Linux apk已验证 · 92%
sudo apk add jbig2encAlpine Linux edge package indexes · jbig2enc · 来源: dl-cdn.alpinelinux.org
Nix已验证 · 92%
nix profile install nixpkgs#jbig2encnixpkgs package indexes · pkgs/by-name/jb/jbig2enc/package.nix · 来源: api.github.com
概览
软件包摘要
JBIG2 encoder (for monochrome documents)
历史
项目历史与用法
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.
项目历史
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.
采用历史
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.
使用方式
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.
为什么软件包爱好者会关心
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.
时间线
- 2009: Public GitHub repository created and version 0.27 recorded with Leptonica 1.58 support.
- 2012: Version 0.28 added autotools support, a Visual C++ solution, version reporting, and PDF DPI fixes.
- 2017: Version 0.29 fixed builds with Leptonica 1.70 and adjusted reference counting.
- 2024: Version 0.30 moved PDF helper support to Python 3, added CMake, standalone .jb2 support, DPI options, and ARM endian fixes.
- 2026: Versions 0.31 and 0.32 added build-system work, CI improvements, argument checks, C++17 requirements, and memory-leak fixes.
Related projects
- The README names Leptonica as a required imaging library and links related jbig2enc sample and minidjvu projects. In package-manager use it is often encountered through OCRmyPDF and other scanned-document workflows.
来源
安全态势
风险级别：绿色
narrow executable package without higher-risk signals.
风险分类器
绿色 风险 · 低 置信度 · appliance
原因
- narrow executable package without higher-risk signals
信号
- metadata:no-higher-risk-signals
安装行为
- formula 元数据中未记录 Homebrew post-install 钩子。
- Homebrew bottle 元数据适用于 6 个平台目标。
- 安装时包含 6 个运行时依赖。
- 构建元数据列出 4 个构建依赖。
建议审查
在无人值守的代理使用前，请检查该工具是否读取明文凭据、写入远程状态、发布制品或调用插件。
可执行文件
已安装的可执行文件
| 命令 | 类型 | 暴露范围 | 备注 |
|---|---|---|---|
jbig2 | cli | 全局可执行文件 | |
jbig2topdf.py | cli | 全局可执行文件 |
新鲜度
版本和新鲜度
这些信号区分页生成时间、软件包管理器活动和上游发布比较。只有存在证据 URL 和可比较版本时，才会提示版本落后。
页面生成时间2026-07-10
管理器版本0.32
管理器更新时间2026-06-19
本地数据OK
上游当前
检测到的最新版本0.32
https://github.com/agl/jbig2enc
- OK没有生成新鲜度警告。
安装元数据
软件包元数据
| 软件包键 | brew:jbig2enc |
|---|---|
| 版本 | 0.32 |
| 软件包管理器 | Homebrew |
| 软件包管理器页面 | https://formulae.brew.sh/formula/jbig2enc |
| 主页 | https://github.com/agl/jbig2enc |
| 仓库 | https://github.com/agl/jbig2enc |
| 上游文档 | https://github.com/agl/jbig2enc/blob/master/README.md |
| 许可证 | Apache-2.0 |
| 源码归档 | https://github.com/agl/jbig2enc/archive/refs/tags/0.32.tar.gz |
| 最后更新 | 2026-06-19T22:36:09Z |
| Pulse | updated |
| 依赖 | giflib, jpeg-turbo, leptonica, libpng, libtiff, webp |
| 构建依赖 | autoconf, automake, libtool, pkgconf |
| Bottle | 可用 (于 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | 未定义 |
| 服务 | 未声明 |
注册表事实
源数据库详情
| 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 |
|
源数据库匹配
其他软件包管理器记录
匹配项来自外部软件包管理器索引，并与本地 Automic Vault 软件包链接分开显示。
Debian apt95%
jbig2 0.30-1
encoder for JBIG2 - command-line tool
https://github.com/agl/jbig2enc
sudo apt install jbig2- Section: utils
- Architecture: amd64
- Source Package: jbig2enc
- 3 依赖
- normalized package name match
- 匹配方式：Jbig2enc
Debian apt95%
libjbig2enc-dev 0.30-1
encoder for JBIG2 - development headers
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc-dev- Section: libdevel
- Architecture: amd64
- Source Package: jbig2enc
- 2 依赖
- normalized package name match
- 匹配方式：Jbig2enc
Debian apt95%
libjbig2enc0t64 0.30-1
encoder for JBIG2 - libraries
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc0t64- Section: libs
- Architecture: amd64
- Source Package: jbig2enc
- 6 依赖
- 1 提供
- 1 可选依赖
- normalized package name match
- 匹配方式：Jbig2enc
Nix95%
jbig2enc
nix profile install nixpkgs#jbig2enc- normalized package name match
- 匹配方式：Jbig2enc
Ubuntu apt95%
jbig2 0.29-2.1build1
encoder for JBIG2 - command-line tool
https://github.com/agl/jbig2enc
sudo apt install jbig2- Section: universe/utils
- Architecture: amd64
- Source Package: jbig2enc
- 3 依赖
- normalized package name match
- 匹配方式：Jbig2enc
Ubuntu apt95%
libjbig2enc-dev 0.29-2.1build1
encoder for JBIG2 - development headers
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc-dev- Section: universe/libdevel
- Architecture: amd64
- Source Package: jbig2enc
- 2 依赖
- normalized package name match
- 匹配方式：Jbig2enc
Ubuntu apt95%
libjbig2enc0t64 0.29-2.1build1
encoder for JBIG2 - libraries
https://github.com/agl/jbig2enc
sudo apt install libjbig2enc0t64- Section: universe/libs
- Architecture: amd64
- Source Package: jbig2enc
- 6 依赖
- 1 提供
- 1 可选依赖
- normalized package name match
- 匹配方式：Jbig2enc
apk95%
jbig2enc 0.30-r0
JBIG2 Encoder
https://github.com/agl/jbig2enc
sudo apk add jbig2enc- License: Apache-2.0
- Architecture: x86_64
- Source Package: jbig2enc
- 1 依赖
- 1 提供
- normalized package name match
- 匹配方式：Jbig2enc
apk95%
jbig2enc-dev 0.30-r0
JBIG2 Encoder (development files)
https://github.com/agl/jbig2enc
sudo apk add jbig2enc-dev- License: Apache-2.0
- Architecture: x86_64
- Source Package: jbig2enc
- 1 依赖
- normalized package name match
- 匹配方式：Jbig2enc
apk95%
jbig2enc-doc 0.30-r0
JBIG2 Encoder (documentation)
https://github.com/agl/jbig2enc
sudo apk add jbig2enc-doc- License: Apache-2.0
- Architecture: x86_64
- Source Package: jbig2enc
- normalized package name match
- 匹配方式：Jbig2enc
apk95%
jbig2enc-static 0.30-r0
JBIG2 Encoder (static library)
https://github.com/agl/jbig2enc
sudo apk add jbig2enc-static- License: Apache-2.0
- Architecture: x86_64
- Source Package: jbig2enc
- normalized package name match
- 匹配方式：Jbig2enc
MacPorts95%
jbig2enc
sudo port install jbig2enc- normalized package name match
- 匹配方式：Jbig2enc
来源线索
由仓库数据生成
此页面由 av-web 从 scripts/generate-pkg-sqlite.py 生成的私有软件包 SQLite 工件提供。
Combined YAML source
View the package source record on GitHub.
使用的来源
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment