macOS
Homebrewverified · 100%
brew install caesiumcltlocal Homebrew formula metadata
brew / rank 4948
Install caesiumclt with Homebrew, winget
Fast and efficient lossy and/or lossless image compression tool. Version 1.4.0 via Homebrew; verified 2026-07-08. Also installable with winget: winget install --id SaeraSoft.CaesiumCLT -e.
install
Additional install commands
Windows
Windows Package Managerverified · 92%
winget install --id SaeraSoft.CaesiumCLT -eWindows Package Manager source index · SaeraSoft.CaesiumCLT · source: cdn.winget.microsoft.com
overview
Package summary
Fast and efficient lossy and/or lossless image compression tool
Project links
Commands and aliases
- caesiumclt
history
Project history and usage
CaesiumCLT is the command-line member of the Caesium image-compression family, packaged for workflows where batch JPEG, PNG, WebP, and GIF optimization belongs in scripts rather than a desktop GUI.
Project history
The public caesium-clt repository dates to 2015 and describes itself as Caesium Command Line Tools. The current README presents the tool as a Rust command-line compressor built on libcaesium, with lossy, lossless, maximum-size, resize, conversion, metadata, recursive, and multithreaded modes.
The project changelog records a major migration to Rust in the 0.19 line and a 1.0.0 release that consolidated multi-format compression, resizing, format conversion, dry-run, overwrite policy, and recursive batch behavior. Subsequent 1.x releases added Homebrew-oriented release automation, GIF support, human-readable size limits, minimum-savings logic, faster scanning, and JSON output.
Adoption history
CaesiumCLT is distributed through developer and user package channels rather than only as release binaries: the official README documents Cargo, Homebrew, and Winget installs, and Homebrew carries it as the caesiumclt formula. Its audience is the overlap between web/media optimization users and shell users who want repeatable compression jobs.
How it is used
Common use is batch image compression from the shell: quality-based lossy compression, lossless optimization, recursive directory processing, conversion to WebP or JPEG, max-size targeting, and optional EXIF or timestamp preservation. The docs also expose scripting-friendly switches such as dry-run, quiet/verbose levels, thread count, and JSON output.
Why package nerds care
For package maintainers, CaesiumCLT is notable as a small media CLI that wraps a dedicated compression engine while staying easy to ship across Cargo, Homebrew, Winget, and GitHub release binaries. It is a useful example of a GUI-adjacent application family exposing a clean automation surface for CI image optimization and bulk asset cleanup.
Timeline
- 2015: Public caesium-clt repository created on GitHub.
- 2025: 1.0.0 release documents the core modern feature set.
- 2025: 1.1.0 adds GIF support and Homebrew installation notes.
- 2026: 1.3.0 release adds fast scanning and minimum-savings behavior.
Related projects
- libcaesium is the compression engine named by the README as the core library behind CaesiumCLT.
- The broader Caesium family includes SaeraSoft's graphical Caesium image compressor, while CaesiumCLT serves the command-line and automation use case.
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:compress,image
Install behavior
- No Homebrew bottle metadata was recorded.
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 |
|---|---|---|---|
caesiumclt | executable | indexed executable | Discovered from the local executable index. |
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 generated2026-08-03
manager version1.4.0
manager updated2026-07-08
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:caesiumclt |
|---|---|
| Version | 1.4.0 |
| Package manager | Homebrew |
| Homepage | https://github.com/Lymphatus/caesium-clt |
| Repository | https://github.com/Lymphatus/caesium-clt |
| Last updated | 2026-07-08T09:42:46Z |
| Pulse | updated |
| Bottle | not recorded |
| Service | none declared |
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
winget95%
SaeraSoft.CaesiumCLT
winget install --id SaeraSoft.CaesiumCLT -e- normalized package name match
- Matched by: Caesiumclt
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
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- pkg.so package database
- pkgdb category and tag curation