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JamieMason/ImageOptim-CLI(新しいタブで開きます)
主要言語: Rust
Make optimisation of images part of your automated build process
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- 最終更新
- 2026/08/02
主要言語: Rust
Make optimisation of images part of your automated build process
Automates ImageOptim, ImageAlpha, and JPEGmini for Mac to make batch optimisation of images part of your automated build process.
npm install --global imageoptim-cli
Usage: imageoptim [OPTIONS] [PATTERNS]...
Arguments:
[PATTERNS]... Glob patterns of images or directories to optimise
Options:
-a, --imagealpha Enable ImageAlpha
-j, --jpegmini Enable JPEGmini
-I, --no-imageoptim Disable ImageOptim
--quality <MIN-MAX> ImageAlpha quality range from 0-100 [default: 65-80]
--speed <N> ImageAlpha speed from 1 (brute-force) to 10 (fastest) [default: 1]
--number-of-colors <N> ImageAlpha palette size from 2-256 [default: 256]
--batch-size <N> How many images to process at a time [default: 3000]
--dry-run List images which would be optimised, without optimising them
--json Output newline-delimited JSON instead of human-readable text
--verbose Output debug logging
-S, --no-stats Do not display file size savings and quality loss information
-C, --no-color Output to the terminal without colors
-h, --help Print help
-V, --version Print version
# Run ImageOptim.app over every image in current directory imageoptim # Run ImageAlpha.app and ImageOptim.app over every PNG in current directory imageoptim --imagealpha '**/*.png' # Run JPEGmini.app and ImageOptim.app over every JPG in current directory imageoptim --jpegmini '**/*.jpg' '**/*.jpeg' # Run JPEGmini.app over every JPG in current directory imageoptim --jpegmini --no-imageoptim '**/*.jpg' '**/*.jpeg' # Run ImageOptim.app over every image in a specific directory imageoptim '~/Desktop'
macOS only. Each app is optional and must be installed separately:
JPEGmini has no API or command line interface, so this tool automates its GUI. For that to work, the program running imageoptim-cli (such as your terminal) needs permission to control your computer under System Settings → Privacy & Security → Accessibility.
This is a Rust rewrite of the original TypeScript + AppleScript implementation, distributed on npm as platform-specific binaries. See the justfile for available commands:
just test # run all tests just lint # cargo check, fmt, clippy just build-local # build and install the npm packages for this machine just test-local # smoke test the locally built npm package