SVGO 
SVGO, short for SVG Optimizer, is a Node.js library and command-line application for optimizing SVG files.
💖 Sponsor SVGO on Open Collective to support continued improvements in stability and performance.
Why?
SVG files, especially those exported from vector editors, usually contain a lot of redundant information. This includes editor metadata, comments, hidden elements, default or suboptimal values, and other stuff that can be safely removed or converted without impacting rendering.
Installation
You can install SVGO globally through npm, yarn, or pnpm. Alternatively, drop the global flag (global/-g) to use it in your Node.js project.
# npm
npm install -g svgo
# yarn
yarn global add svgo
# pnpm
pnpm add -g svgo
Command-line usage
Process single files:
svgo one.svg two.svg -o one.min.svg two.min.svg
Process a directory of files recursively with -r/--recursive and -f/--folder:
svgo -rf path/to/directory_with_svgs -o path/to/output_directory
Help for advanced usage:
svgo --help
Configuration
SVGO has a plugin architecture. You can read more about all plugins in Plugins | SVGO Documentation, and the default plugins in Preset Default | SVGO Documentation.
SVGO reads the configuration from svgo.config.mjs or the --config path/to/config.mjs command-line option. Some other parameters can be configured though command-line options too.
svgo.config.mjs
export default {
multipass: false, // boolean
datauri: 'base64', // 'base64'|'enc'|'unenc'
js2svg: {
indent: 4, // number
pretty: false, // boolean
},
plugins: [
'preset-default', // built-in plugins enabled by default
'prefixIds', // enable built-in plugins by name
// enable built-in plugins with an object to configure plugins
{
name: 'prefixIds',
params: {
prefix: 'uwu',
},
},
],
};
Default preset
Instead of configuring SVGO from scratch, you can tweak the default preset to suit your needs by configuring or disabling the respective plugin.
svgo.config.mjs
export default {
plugins: [
{
name: 'preset-default',
params: {
overrides: {
// disable a default plugin
cleanupIds: false,
// customize the params of a default plugin
inlineStyles: {
onlyMatchedOnce: false,
},
},
},
},
],
};
You can find a list of the default plugins in the order they run in Preset Default | SVGO Documentation.
Custom plugins
You can also specify custom plugins:
svgo.config.mjs
import importedPlugin from './imported-plugin';
export default {
plugins: [
// plugin imported from another JavaScript file
importedPlugin,
// plugin defined inline
{
name: 'customPlugin',
params: {
paramName: 'paramValue',
},
fn: (ast, params, info) => {},
},
],
};
API usage
SVGO provides a few low level utilities.
optimize
The core of SVGO is optimize function.
import { optimize } from 'svgo';
const result = optimize(svgString, {
path: 'path-to.svg', // recommended
multipass: true, // all other config fields are available here
});
const optimizedSvgString = result.data;
loadConfig
If you write a tool on top of SVGO you may want to resolve the svgo.config.mjs file.
import { loadConfig } from 'svgo';
const config = await loadConfig();
You can also specify a path and customize the current working directory.
const config = await loadConfig(configFile, cwd);
License and Copyright
This software is released under the terms of the MIT license.
Logo by André Castillo.
SVGO（SVG Optimizer）是一个 Node.js 库和命令行工具，用来优化 SVG 文件——去掉多余的信息，让文件体积更小，同时渲染效果不变。