# svgo > SVG Optimizer: a Node.js-based tool for optimizing Scalable Vector Graphics files. > It applies a series of transformation rules (plugins), which can be toggled individually. > More information: . - 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}} -o {{test.min.svg}}` - Optimize all SVG files within a directory (overwrites the original files): `svgo -f {{path/to/directory/with/svg/files}}` - Optimize all SVG files within a directory and save the resulting files to another directory: `svgo -f {{path/to/input/directory}} -o {{path/to/output/directory}}` - 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 -` - Show available plugins: `svgo --show-plugins`