npm install --global imagemin-power-cli

npm install --save imagemin-power-cli

    Usage
        $ imagemin-power [input] [options]
        $ imagemin-power <file> > <output>
        $ cat <file> | imagemin-power > <output>
        
    Input: Files(s), glob(s), or nothing to use stdin.
      
        If an input argument is wrapped in quotation marks, it will be passed to
        node-glob for cross-platform glob support. \`node_modules\` and
        \`bower_components\` are always ignored. You can also pass no input and use
        stdin, instead.

    Options:

        -c, --config           Configuration for plugins, need export \`plugins\`.
        -d, --cwd              Current working directory.
        -m, --max-concurrency  Sets the maximum number of instances of Imagemin that can run at once.
        -p, --plugin           Override the default plugins.
        -o, --out-dir          Output directory (respect \`cwd\` argument).
        -r, --recursive        Run the command recursively.
        -i, --ignore-errors    Not stop on errors (it works with only with <path|glob>).
        -s  --silent           Reported only errors.
        -v, --verbose          Reported everything.

    Examples
        $ imagemin-power images/* --out-dir=build
        $ imagemin-power foo.png > foo-optimized.png
        $ cat foo.png | imagemin-power > foo-optimized.png
        $ imagemin-power --plugins=pngquant foo.png > foo-optimized.png