macOS
Homebrewverified · 100%
brew install leptonicalocal Homebrew formula metadata
MacPortsverified · 94%
sudo port install leptonicaMacPorts ports tree · graphics/leptonica/Portfile · source: api.github.com
brew
Install leptonica with Homebrew, apk, dnf, MacPorts, Nix, pacman, zypper
Image processing and image analysis library. Version 1.87.0 via Homebrew; verified from local package data.
install
Additional install commands
Linux
Alpine Linux apkverified · 92%
sudo apk add leptonicaAlpine Linux edge package indexes · leptonica · source: dl-cdn.alpinelinux.org
Fedora dnfverified · 92%
sudo dnf install leptonicaFedora Rawhide package metadata · leptonica · source: dl.fedoraproject.org
Nixverified · 92%
nix profile install nixpkgs#leptonicanixpkgs package indexes · pkgs/by-name/le/leptonica/package.nix · source: api.github.com
Arch Linux pacmanverified · 92%
sudo pacman -S leptonicaArch Linux sync databases · leptonica · source: geo.mirror.pkgbuild.com
openSUSE zypperverified · 92%
sudo zypper install leptonica-developenSUSE Tumbleweed package metadata · leptonica-devel · source: download.opensuse.org
overview
Package summary
Image processing and image analysis library
Project links
Commands and aliases
- convertfilestopdf
- convertfilestops
- convertformat
- convertsegfilestopdf
- convertsegfilestops
- converttopdf
- converttops
- fileinfo
- imagetops
- xtractprotos
history
Project history and usage
Leptonica is Dan Bloomberg's open source C library for image processing and image analysis, with especially deep coverage of document-image operations used by OCR and page-processing tools.
Project history
Leptonica's official README metadata dates the work to 2001 and describes it as an open source C library for efficient image processing and image analysis. The project site emphasizes a pedagogical style: the code is accompanied by web pages explaining algorithms and design methods.
The library grew into a broad C toolkit covering raster operations, affine and projective transforms, morphology, convolution, connected components, image format I/O, PDF and PostScript generation, document cleanup, skew detection, dewarping, barcode experiments, and many supporting data structures.
Adoption history
Leptonica became important infrastructure below OCR and document-image projects. Its README lists Tesseract OCR, OpenCV, and jbig2enc among open source projects that use it.
The project's packaging history reflects a classic C-library role: distributions ship the library, headers, command-line utilities, and example programs so higher-level tools can depend on a stable native image-processing base.
How it is used
Developers link against liblept and use the pix-centered API for reading, transforming, analyzing, and writing images. The package also includes command-line programs such as file conversion and PDF/PostScript helpers that expose common library workflows.
Why package nerds care
Leptonica is significant because it is one of those quiet dependency packages that makes OCR stacks work. It is small enough to feel like a C utility library, but large enough to cover thousands of image-processing functions and the boring portability details that downstream packages need.
Timeline
- 2001: Official metadata identifies Leptonica as an open source C library for image processing and image analysis.
- 2010s: Leptonica moved into GitHub-based maintenance, with contributors preserving old distributions and modernizing build support.
- 2024: Version 1.85.0 added PDF rendering support and many maintenance fixes.
- 2025: Version 1.87.0 was distributed on December 24, 2025.
Related projects
- Tesseract OCR is a major downstream user.
- OpenCV and jbig2enc are listed by Leptonica as open source projects using the library.
Sources
security posture
Risk level: blue
broad file, network, media, or database tool signal.
Risk classifier
blue risk · medium confidence · tool
Why
- broad file, network, media, or database tool signal
Signals
- text:image
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 6 platform targets.
- Installs with 6 runtime dependencies.
- Build metadata lists 1 build dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
convertfilestopdf | cli | global executable | |
convertfilestops | cli | global executable | |
convertformat | cli | global executable | |
convertsegfilestopdf | cli | global executable | |
convertsegfilestops | cli | global executable | |
converttopdf | cli | global executable | |
converttops | cli | global executable | |
fileinfo | cli | global executable | |
imagetops | cli | global executable | |
xtractprotos | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version1.87.0
manager updated
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/DanBloomberg/leptonica
- infoNo package-manager update timestamp was available.low confidence
- infoNo cached GitHub release or tag data was available.https://github.com/DanBloomberg/leptonicanone confidence
install metadata
Package metadata
| Package key | brew:leptonica |
|---|---|
| Version | 1.87.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/leptonica |
| Homepage | http://www.leptonica.org/ |
| Repository | https://github.com/DanBloomberg/leptonica |
| Upstream docs | https://www.leptonica.org/ |
| License | BSD-2-Clause |
| Source archive | https://github.com/DanBloomberg/leptonica/releases/download/1.87.0/leptonica-1.87.0.tar.gz |
| Dependencies | giflib, jpeg-turbo, libpng, libtiff, openjpeg, webp |
| Build dependencies | pkgconf |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | leptonica |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
leptonica
nix profile install nixpkgs#leptonica- normalized package name match
- Matched by: Leptonica
apk95%
leptonica 1.87.0-r0
Software that is broadly useful for image processing and image analysis applications
sudo apk add leptonica- License: custom
- Architecture: x86_64
- Source Package: leptonica
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Leptonica
apk95%
leptonica-dev 1.87.0-r0
Software that is broadly useful for image processing and image analysis applications (development files)
sudo apk add leptonica-dev- License: custom
- Architecture: x86_64
- Source Package: leptonica
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Leptonica
apk95%
leptonica-doc 1.87.0-r0
Software that is broadly useful for image processing and image analysis applications (documentation)
sudo apk add leptonica-doc- License: custom
- Architecture: x86_64
- Source Package: leptonica
- normalized package name match
- Matched by: Leptonica
dnf95%
leptonica 1.87.0-4.fc45
C library for efficient image processing and image analysis operations
https://github.com/danbloomberg/leptonica
sudo dnf install leptonica- License: Leptonica
- Category: Unspecified
- Architecture: i686
- Source Package: leptonica
- 10 dependencies
- 2 provides
- normalized package name match
- Matched by: Leptonica
dnf95%
leptonica-devel 1.87.0-4.fc45
Development files for leptonica
https://github.com/danbloomberg/leptonica
sudo dnf install leptonica-devel- License: Leptonica
- Category: Unspecified
- Architecture: i686
- Source Package: leptonica
- 5 dependencies
- 3 provides
- normalized package name match
- Matched by: Leptonica
dnf95%
leptonica-tools 1.87.0-4.fc45
Leptonica utility tools
https://github.com/danbloomberg/leptonica
sudo dnf install leptonica-tools- License: Leptonica
- Category: Unspecified
- Architecture: x86_64
- Source Package: leptonica
- 4 dependencies
- 1 provides
- normalized package name match
- Matched by: Leptonica
dnf95%
mingw32-leptonica 1.87.0-4.fc45
MinGW Windows Leptonica library
https://github.com/danbloomberg/leptonica
sudo dnf install mingw32-leptonica- License: Leptonica
- Category: Unspecified
- Architecture: noarch
- Source Package: leptonica
- 4 dependencies
- 3 provides
- normalized package name match
- Matched by: Leptonica
dnf95%
mingw64-leptonica 1.87.0-4.fc45
MinGW Windows Leptonica library
https://github.com/danbloomberg/leptonica
sudo dnf install mingw64-leptonica- License: Leptonica
- Category: Unspecified
- Architecture: noarch
- Source Package: leptonica
- 4 dependencies
- 3 provides
- normalized package name match
- Matched by: Leptonica
pacman95%
leptonica 1.87.0-1
Software that is broadly useful for image processing and image analysis applications
sudo pacman -S leptonica- License: custom
- Architecture: x86_64
- 15 dependencies
- normalized package name match
- Matched by: Leptonica
zypper95%
leptonica-devel 1.87.0-1.4
Leptonica Development Files
sudo zypper install leptonica-devel- License: BSD-2-Clause
- Category: Development/Libraries/C and C++
- Architecture: x86_64
- Source Package: leptonica
- 2 dependencies
- 4 provides
- normalized package name match
- Matched by: Leptonica
zypper95%
leptonica-tools 1.87.0-1.4
Leptonica tools
sudo zypper install leptonica-tools- License: BSD-2-Clause
- Category: Productivity/Graphics/Other
- Architecture: x86_64
- Source Package: leptonica
- 2 dependencies
- 1 provides
- normalized package name match
- Matched by: Leptonica
zypper95%
libleptonica6 1.87.0-1.4
Library for image processing and image analysis applications
sudo zypper install libleptonica6- License: BSD-2-Clause
- Category: System/Libraries
- Architecture: x86_64
- Source Package: leptonica
- 11 dependencies
- 3 provides
- normalized package name match
- Matched by: Leptonica
MacPorts95%
leptonica
sudo port install leptonica- normalized package name match
- Matched by: Leptonica
Nix92%
fileinfo
nix profile install nixpkgs#fileinfo- installed executable or alias match
- Matched by: Fileinfo
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- 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