# 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

```sh
sudo av install brew:caesiumclt
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install caesiumclt
```

  Evidence: local Homebrew formula metadata

### Windows

- winget (92%):

```sh
winget install --id SaeraSoft.CaesiumCLT -e
```

  Evidence: Windows Package Manager source index: SaeraSoft.CaesiumCLT from https://cdn.winget.microsoft.com/cache/source.msix

## Package facts

- **Package key:** brew:caesiumclt
- **Package manager:** Homebrew
- **Version:** 1.4.0
- **Source summary:** Fast and efficient lossy and/or lossless image compression tool
- **Homepage:** <https://github.com/Lymphatus/caesium-clt>
- **Repository:** <https://github.com/Lymphatus/caesium-clt>
- **Last updated:** 2026-07-08T09:42:46Z
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- caesiumclt (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 1.4.0
## 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

- <https://api.github.com/repos/Lymphatus/caesium-clt>
- <https://api.github.com/repos/Lymphatus/caesium-clt/releases>
- <https://github.com/Lymphatus/caesium-clt#readme>
- <https://github.com/Lymphatus/caesium-clt/blob/main/CHANGELOG.md>
- <https://github.com/Lymphatus/caesium-clt/blob/main/docs/USAGE.md>


## Security Notes

broad file, network, media, or database tool signal.

- **Geiger risk:** blue / medium
- broad file, network, media, or database tool signal

## Other Package-Manager Records

- winget - SaeraSoft.CaesiumCLT: normalized package name match | Windows Package Manager source index: SaeraSoft.CaesiumCLT from https://cdn.winget.microsoft.com/cache/source.msix


## Combined YAML source

View the package source record on GitHub. [combined/caesiumclt.yml](https://github.com/mxcl/pkgdb/blob/main/combined/caesiumclt.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph