macOS
brew install agglocal Homebrew formula metadata
sudo port install aggMacPorts ports tree · graphics/agg/Portfile · source: api.github.com
brew
Asciicast to GIF converter. Version 1.9.0 via Homebrew; verified 2026-06-15.
install
brew install agglocal Homebrew formula metadata
sudo port install aggMacPorts ports tree · graphics/agg/Portfile · source: api.github.com
sudo apt install libagg-devDebian stable package indexes · libagg-dev · source: deb.debian.org
nix profile install nixpkgs#aggnixpkgs package indexes · pkgs/by-name/ag/agg/package.nix · source: api.github.com
scoop install main/aggScoop official bucket manifest trees · bucket/agg.json · source: api.github.com
winget install --id asciinema.agg -eWindows Package Manager source index · asciinema.agg · source: cdn.winget.microsoft.com
overview
Asciicast to GIF converter
history
agg, the asciinema gif generator, is a command-line tool for rendering terminal session recordings in asciicast format to animated GIF files.
The agg repository was created under the asciinema organization in July 2022, and v1.0.0, named Hello, World!, was released in August 2022. The README describes it as a command-line generator for animated GIF files from terminal session recordings.
agg belongs to the broader asciinema ecosystem created by Marcin Kulik. Whereas asciinema records, streams, and plays terminal sessions, agg focuses on producing portable GIF artifacts from asciicast files. Later releases through 2026 continued the 1.x line.
The upstream README documents building and installing with Cargo from the GitHub repository, manual source builds, and Docker/Podman image builds. The supplied package metadata shows Homebrew, MacPorts, Nix, Scoop, and winget packaging for agg; Debian and Ubuntu entries in the supplied facts refer to `libagg-dev`, so they should not be treated as upstream asciinema agg adoption without separate confirmation.
agg converts asciicast recordings produced by asciinema into GIF output. The README highlights support for asciicast v1, v2, and v3, input from local files, stdin, or HTTP(S) URLs, optimized GIF output through gifski, built-in and custom themes, font controls, emoji rendering, multiple rendering backends, playback speed, idle-time limiting, frame selection, looping, FPS caps, and terminal-size overrides.
Its usual package-manager value is pragmatic: a user records a terminal session with asciinema, then ships a GIF for documentation, READMEs, release notes, issue reports, or places where embedded asciinema playback is not available.
agg sits at a fun packaging intersection: terminal recording culture, Rust command-line distribution, font rendering, GIF encoding, and documentation workflows. It is the package you reach for when a terminal cast needs to become a boring old image file that every platform can show.
It also demonstrates how ecosystem packages grow around a file format. asciicast is the format; asciinema is the recorder/player; agg is the renderer/exporter.
security posture
narrow executable package without higher-risk signals.
green risk · low confidence · appliance
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
agg | cli | global executable |
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.
https://github.com/asciinema/agg
install metadata
| Package key | brew:agg |
|---|---|
| Version | 1.9.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/agg |
| Homepage | https://docs.asciinema.org/manual/agg/ |
| Repository | https://github.com/asciinema/agg |
| Upstream docs | https://docs.asciinema.org/manual/agg |
| License | GPL-3.0-or-later |
| Source archive | https://github.com/asciinema/agg/archive/refs/tags/v1.9.0.tar.gz |
| Last updated | 2026-06-15T10:20:09-04:00 |
| Pulse | updated |
| Build dependencies | rust |
| 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 | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | agg |
| 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 |
|
source database matches
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
libagg-dev 1:2.7.0.r145+dfsg-2
AntiGrain Geometry graphical toolkit (static development files)
sudo apt install libagg-devlibagg2-dev 1:2.7.0.r145+dfsg-2
AntiGrain Geometry graphical toolkit (static and shared development files)
sudo apt install libagg2-devlibagg2t64 1:2.7.0.r145+dfsg-2
AntiGrain Geometry graphical toolkit (runtime files)
sudo apt install libagg2t64agg
nix profile install nixpkgs#agglibagg-dev 1:2.6.1-r134+dfsg1-2.1build1
AntiGrain Geometry graphical toolkit (static development files)
sudo apt install libagg-devlibagg2-dev 1:2.6.1-r134+dfsg1-2.1build1
AntiGrain Geometry graphical toolkit (static and shared development files)
sudo apt install libagg2-devlibagg2t64 1:2.6.1-r134+dfsg1-2.1build1
AntiGrain Geometry graphical toolkit (runtime files)
sudo apt install libagg2t64agg
sudo port install aggmain/agg
scoop install main/aggasciinema.agg
winget install --id asciinema.agg -esource trail
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View the package source record on GitHub.