install

Additional install commands

macOS

Homebrewverified · 100%

brew install apngasm

local Homebrew formula metadata

Linux

Debian aptverified · 92%

sudo apt install apngasm

Debian stable package indexes · apngasm · source: deb.debian.org

Nixverified · 92%

nix profile install nixpkgs#apngasm

nixpkgs package indexes · apngasm · source: raw.githubusercontent.com

Windows

Scoopverified · 92%

scoop install main/apngasm

Scoop official bucket manifest trees · bucket/apngasm.json · source: api.github.com

overview

Package summary

Next generation of apngasm, the APNG assembler

Project links

Commands and aliases

apngasm

history

Project history and usage

apngasm is an APNG assembler CLI and library for creating, and in the newer GitHub version also disassembling, Animated PNG files. It is one of the core APNG-family utilities alongside disassemblers and GIF/APNG converters.

Project history

The older SourceForge-hosted APNG Assembler page describes a command-line and GUI tool that creates APNG animations from PNG or TGA image sequences. It emphasizes inter-frame optimization, palette and color-type optimization, and zlib, 7zip, and Zopfli compression options.

The current GitHub project was created in July 2013 and calls itself the next generation of apngasm. Its README documents a CMake-based cross-platform build, CLI and library packaging, Java and Ruby wrappers generated through SWIG, and copyright shared as a joint production by Max Stepin and K.K. GenSouSha.

Official GitHub releases show the 3.1.x line in 2014 and 2015, followed by a 3.1.10 release in 2021 for newer build and packaging systems plus small fixes.

Adoption history

The README recommends Homebrew for the latest macOS apngasm, GitHub releases for Windows, and a Launchpad PPA for GNU/Linux. The supplied package metadata also records Homebrew, Debian, Nix, Scoop, and Ubuntu packages, indicating broad packaging for a specialized image tool.

The SourceForge feed shows prebuilt 2.91 artifacts for Linux, macOS, and Windows in 2016, while the GitHub repository shows the later source-control home for the next-generation codebase.

How it is used

The SourceForge documentation shows commands such as apngasm output.png frame001.png [options] and apngasm output.png frame*.png [options]. Options include frame delay, loop count, skipping the first frame, keeping palette or color type, compression backend, and iteration counts.

The GitHub README is more build- and packaging-oriented, with platform-specific dependency lists and package-building instructions rather than a fixed user config file.

Why package nerds care

apngasm matters because APNG is a format niche where small command-line utilities define the practical toolchain. It gives packagers a native assembler that can be scripted, built through CMake, wrapped as a library, and distributed through distro repositories.

Its evolution from SourceForge binaries and GUI/CLI zips to a GitHub-hosted CMake project is a compact example of how older image-format utilities migrated into modern package-manager ecosystems.

Timeline

2013: Current apngasm/apngasm GitHub repository was created.
2014: GitHub 3.1.x releases began, including libapngasm updates.
2016: SourceForge feed records APNG Assembler 2.91 source and platform binary releases.
2021: GitHub 3.1.10 release updated builds and packaging for newer systems.

Related projects

The official SourceForge page links apngdis, gif2apng, apng2gif, and apngopt as related APNG utilities. The GitHub README also points Ruby users toward the rapngasm gem.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Installs with 4 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
`apngasm`	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 version3.1.10

manager updated

local dataok

upstreamcurrent

latest detected3.1.10

https://github.com/apngasm/apngasm

infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package key	brew:apngasm
Version	3.1.10
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/apngasm
Homepage	https://github.com/apngasm/apngasm
Repository	https://github.com/apngasm/apngasm
Upstream docs	http://apngasm.sourceforge.net/
License	Zlib
Source archive	https://github.com/apngasm/apngasm/archive/refs/tags/3.1.10.tar.gz
Dependencies	boost, icu4c@78, libpng, lzlib
Build dependencies	cmake
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	apngasm
Version Scheme	0
Revision	20
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Debian apt95%

apngasm 2.91-5+b1

assemble APNG animation from PNG/TGA image sequence

https://sourceforge.net/projects/apngasm/

sudo apt install apngasm

Section: graphics
Architecture: amd64
Source Package: apngasm
6 dependencies
1 optional deps
normalized package name match
Matched by: Apngasm

Debian stable package indexes · deb.debian.org · Debian stable package indexes: apngasm from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Nix95%

apngasm

nix profile install nixpkgs#apngasm

normalized package name match
Matched by: Apngasm

nixpkgs package indexes · raw.githubusercontent.com · nixpkgs package indexes: apngasm from https://raw.githubusercontent.com/NixOS/nixpkgs/master/pkgs/top-level/all-packages.nix

Ubuntu apt95%

apngasm 2.91-5build2

assemble APNG animation from PNG/TGA image sequence

https://sourceforge.net/projects/apngasm/

sudo apt install apngasm

Section: universe/graphics
Architecture: amd64
6 dependencies
1 optional deps
normalized package name match
Matched by: Apngasm

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: apngasm from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

Scoop95%

main/apngasm

scoop install main/apngasm

normalized package name match
Matched by: Apngasm

Scoop official bucket manifest trees · api.github.com · Scoop official bucket manifest trees: bucket/apngasm.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

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.

combined/apngasm.yml

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

Install apngasm with Homebrew, apt, Nix, scoop