svgo

  SVG Optimizer: a Nodejs-based tool for optimizing Scalable Vector Graphics files.
  It applies a series of transformation rules (plugins), which can be toggled individually.

  - Optimize a file using the default plugins (overwrites the original file):
    svgo test.svg

  - Optimize a file and save the result to another file:
    svgo test.svg test.min.svg

  - Optimize all SVG files within a folder (overwrites the original files):
    svgo -f path/to/folder/with/svg/files

  - Optimize all SVG files within a folder and save the resulting files to another folder:
    svgo -f path/to/input/folder -o path/to/output/folder

  - Optimize SVG content passed from another command, and save the result to a file:
    cat test.svg | svgo -i - -o test.min.svg

  - Optimize a file and print out the result:
    svgo test.svg -o -

  - Optimize a file making sure a given plugin is enabled:
    svgo --enable=plugin_name

  - Show available plugins:
    svgo --show-plugins