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289 lines
22 KiB
289 lines
22 KiB
<div align="center">
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<img src="./logo/logo-web.svg" width="348.61" height="100" alt="SVGO logo"/>
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</div>
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## SVGO [](https://npmjs.org/package/svgo) [](https://discord.gg/z8jX8NYxrE)
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**SVG O**ptimizer is a Node.js-based tool for optimizing SVG vector graphics files.
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## Why?
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SVG files, especially those exported from various editors, usually contain a lot of redundant and useless information. This can include editor metadata, comments, hidden elements, default or non-optimal values and other stuff that can be safely removed or converted without affecting the SVG rendering result.
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## Installation
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```sh
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npm -g install svgo
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```
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or
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```sh
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yarn global add svgo
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```
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## CLI usage
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```sh
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svgo one.svg two.svg -o one.min.svg two.min.svg
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```
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Or use the `--folder`/`-f` flag to optimize a whole folder of SVG icons
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```sh
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svgo -f ./path/to/folder/with/svg/files -o ./path/to/folder/with/svg/output
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```
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See help for advanced usage
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```sh
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svgo --help
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```
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## Configuration
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Some options can be configured with CLI though it may be easier to have the configuration in a separate file.
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SVGO automatically loads configuration from `svgo.config.js` or module specified with `--config` flag.
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```js
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module.exports = {
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multipass: true, // boolean. false by default
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datauri: 'enc', // 'base64', 'enc' or 'unenc'. 'base64' by default
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js2svg: {
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indent: 2, // string with spaces or number of spaces. 4 by default
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pretty: true, // boolean, false by default
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},
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};
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```
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SVGO has a plugin-based architecture, so almost every optimization is a separate plugin.
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There is a set of [built-in plugins](#built-in-plugins). See how to configure them:
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```js
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module.exports = {
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plugins: [
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// enable a built-in plugin by name
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'builtinPluginName',
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// or by expanded version
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{
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name: 'builtinPluginName',
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},
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// some plugins allow/require to pass options
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{
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name: 'builtinPluginName',
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params: {
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optionName: 'optionValue',
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},
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},
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],
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};
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```
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The default preset of plugins is fully overridden if the `plugins` field is specified.
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Use `preset-default` plugin to customize plugins options.
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```js
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module.exports = {
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plugins: [
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{
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name: 'preset-default',
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params: {
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overrides: {
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// customize options for plugins included in preset
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builtinPluginName: {
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optionName: 'optionValue',
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},
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// or disable plugins
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anotherBuiltinPlugin: false,
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},
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},
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},
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// Enable builtin plugin not included in preset
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'moreBuiltinPlugin',
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// Enable and configure builtin plugin not included in preset
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{
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name: 'manyBuiltInPlugin',
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params: {
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optionName: 'value',
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},
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},
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],
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};
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```
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Default preset includes the following list of plugins:
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- removeDoctype
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- removeXMLProcInst
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- removeComments
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- removeMetadata
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- removeEditorsNSData
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- cleanupAttrs
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- mergeStyles
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- inlineStyles
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- minifyStyles
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- cleanupIDs
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- removeUselessDefs
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- cleanupNumericValues
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- convertColors
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- removeUnknownsAndDefaults
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- removeNonInheritableGroupAttrs
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- removeUselessStrokeAndFill
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- removeViewBox
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- cleanupEnableBackground
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- removeHiddenElems
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- removeEmptyText
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- convertShapeToPath
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- convertEllipseToCircle
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- moveElemsAttrsToGroup
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- moveGroupAttrsToElems
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- collapseGroups
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- convertPathData
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- convertTransform
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- removeEmptyAttrs
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- removeEmptyContainers
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- mergePaths
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- removeUnusedNS
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- sortDefsChildren
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- removeTitle
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- removeDesc
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It's also possible to specify a custom plugin:
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```js
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const anotherCustomPlugin = require('./another-custom-plugin.js');
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module.exports = {
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plugins: [
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{
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name: 'customPluginName',
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type: 'perItem', // 'perItem', 'perItemReverse' or 'full'
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params: {
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optionName: 'optionValue',
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},
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fn: (ast, params, info) => {},
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},
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anotherCustomPlugin,
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],
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};
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```
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## API usage
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SVGO provides a few low level utilities.
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### optimize
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The core of SVGO is `optimize` function.
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```js
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const { optimize } = require('svgo');
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const result = optimize(svgString, {
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// optional but recommended field
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path: 'path-to.svg',
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// all config fields are also available here
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multipass: true,
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});
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const optimizedSvgString = result.data;
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```
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### loadConfig
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If you write a tool on top of SVGO you might need a way to load SVGO config.
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```js
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const { loadConfig } = require('svgo');
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const config = await loadConfig();
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// you can also specify a relative or absolute path and customize the current working directory
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const config = await loadConfig(configFile, cwd);
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```
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## Built-in plugins
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| Plugin | Description | Default |
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| ------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- |
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| [cleanupAttrs](https://github.com/svg/svgo/blob/master/plugins/cleanupAttrs.js) | cleanup attributes from newlines, trailing, and repeating spaces | `enabled` |
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| [mergeStyles](https://github.com/svg/svgo/blob/master/plugins/mergeStyles.js) | merge multiple style elements into one | `enabled` |
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| [inlineStyles](https://github.com/svg/svgo/blob/master/plugins/inlineStyles.js) | move and merge styles from `<style>` elements to element `style` attributes | `enabled` |
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| [removeDoctype](https://github.com/svg/svgo/blob/master/plugins/removeDoctype.js) | remove `doctype` declaration | `enabled` |
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| [removeXMLProcInst](https://github.com/svg/svgo/blob/master/plugins/removeXMLProcInst.js) | remove XML processing instructions | `enabled` |
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| [removeComments](https://github.com/svg/svgo/blob/master/plugins/removeComments.js) | remove comments | `enabled` |
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| [removeMetadata](https://github.com/svg/svgo/blob/master/plugins/removeMetadata.js) | remove `<metadata>` | `enabled` |
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| [removeTitle](https://github.com/svg/svgo/blob/master/plugins/removeTitle.js) | remove `<title>` | `enabled` |
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| [removeDesc](https://github.com/svg/svgo/blob/master/plugins/removeDesc.js) | remove `<desc>` | `enabled` |
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| [removeUselessDefs](https://github.com/svg/svgo/blob/master/plugins/removeUselessDefs.js) | remove elements of `<defs>` without `id` | `enabled` |
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| [removeXMLNS](https://github.com/svg/svgo/blob/master/plugins/removeXMLNS.js) | removes the `xmlns` attribute (for inline SVG) | `disabled` |
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| [removeEditorsNSData](https://github.com/svg/svgo/blob/master/plugins/removeEditorsNSData.js) | remove editors namespaces, elements, and attributes | `enabled` |
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| [removeEmptyAttrs](https://github.com/svg/svgo/blob/master/plugins/removeEmptyAttrs.js) | remove empty attributes | `enabled` |
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| [removeHiddenElems](https://github.com/svg/svgo/blob/master/plugins/removeHiddenElems.js) | remove hidden elements | `enabled` |
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| [removeEmptyText](https://github.com/svg/svgo/blob/master/plugins/removeEmptyText.js) | remove empty Text elements | `enabled` |
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| [removeEmptyContainers](https://github.com/svg/svgo/blob/master/plugins/removeEmptyContainers.js) | remove empty Container elements | `enabled` |
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| [removeViewBox](https://github.com/svg/svgo/blob/master/plugins/removeViewBox.js) | remove `viewBox` attribute when possible | `enabled` |
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| [cleanupEnableBackground](https://github.com/svg/svgo/blob/master/plugins/cleanupEnableBackground.js) | remove or cleanup `enable-background` attribute when possible | `enabled` |
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| [minifyStyles](https://github.com/svg/svgo/blob/master/plugins/minifyStyles.js) | minify `<style>` elements content with [CSSO](https://github.com/css/csso) | `enabled` |
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| [convertStyleToAttrs](https://github.com/svg/svgo/blob/master/plugins/convertStyleToAttrs.js) | convert styles into attributes | `disabled` |
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| [convertColors](https://github.com/svg/svgo/blob/master/plugins/convertColors.js) | convert colors (from `rgb()` to `#rrggbb`, from `#rrggbb` to `#rgb`) | `enabled` |
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| [convertPathData](https://github.com/svg/svgo/blob/master/plugins/convertPathData.js) | convert Path data to relative or absolute (whichever is shorter), convert one segment to another, trim useless delimiters, smart rounding, and much more | `enabled` |
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| [convertTransform](https://github.com/svg/svgo/blob/master/plugins/convertTransform.js) | collapse multiple transforms into one, convert matrices to the short aliases, and much more | `enabled` |
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| [removeUnknownsAndDefaults](https://github.com/svg/svgo/blob/master/plugins/removeUnknownsAndDefaults.js) | remove unknown elements content and attributes, remove attributes with default values | `enabled` |
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| [removeNonInheritableGroupAttrs](https://github.com/svg/svgo/blob/master/plugins/removeNonInheritableGroupAttrs.js) | remove non-inheritable group's "presentation" attributes | `enabled` |
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| [removeUselessStrokeAndFill](https://github.com/svg/svgo/blob/master/plugins/removeUselessStrokeAndFill.js) | remove useless `stroke` and `fill` attributes | `enabled` |
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| [removeUnusedNS](https://github.com/svg/svgo/blob/master/plugins/removeUnusedNS.js) | remove unused namespaces declaration | `enabled` |
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| [prefixIds](https://github.com/svg/svgo/blob/master/plugins/prefixIds.js) | prefix IDs and classes with the SVG filename or an arbitrary string | `disabled` |
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| [cleanupIDs](https://github.com/svg/svgo/blob/master/plugins/cleanupIDs.js) | remove unused and minify used IDs | `enabled` |
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| [cleanupNumericValues](https://github.com/svg/svgo/blob/master/plugins/cleanupNumericValues.js) | round numeric values to the fixed precision, remove default `px` units | `enabled` |
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| [cleanupListOfValues](https://github.com/svg/svgo/blob/master/plugins/cleanupListOfValues.js) | round numeric values in attributes that take a list of numbers (like `viewBox` or `enable-background`) | `disabled` |
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| [moveElemsAttrsToGroup](https://github.com/svg/svgo/blob/master/plugins/moveElemsAttrsToGroup.js) | move elements' attributes to their enclosing group | `enabled` |
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| [moveGroupAttrsToElems](https://github.com/svg/svgo/blob/master/plugins/moveGroupAttrsToElems.js) | move some group attributes to the contained elements | `enabled` |
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| [collapseGroups](https://github.com/svg/svgo/blob/master/plugins/collapseGroups.js) | collapse useless groups | `enabled` |
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| [removeRasterImages](https://github.com/svg/svgo/blob/master/plugins/removeRasterImages.js) | remove raster images | `disabled` |
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| [mergePaths](https://github.com/svg/svgo/blob/master/plugins/mergePaths.js) | merge multiple Paths into one | `enabled` |
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| [convertShapeToPath](https://github.com/svg/svgo/blob/master/plugins/convertShapeToPath.js) | convert some basic shapes to `<path>` | `enabled` |
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| [convertEllipseToCircle](https://github.com/svg/svgo/blob/master/plugins/convertEllipseToCircle.js) | convert non-eccentric `<ellipse>` to `<circle>` | `enabled` |
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| [sortAttrs](https://github.com/svg/svgo/blob/master/plugins/sortAttrs.js) | sort element attributes for epic readability | `disabled` |
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| [sortDefsChildren](https://github.com/svg/svgo/blob/master/plugins/sortDefsChildren.js) | sort children of `<defs>` in order to improve compression | `enabled` |
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| [removeDimensions](https://github.com/svg/svgo/blob/master/plugins/removeDimensions.js) | remove `width`/`height` and add `viewBox` if it's missing (opposite to removeViewBox, disable it first) | `disabled` |
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| [removeAttrs](https://github.com/svg/svgo/blob/master/plugins/removeAttrs.js) | remove attributes by pattern | `disabled` |
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| [removeAttributesBySelector](https://github.com/svg/svgo/blob/master/plugins/removeAttributesBySelector.js) | removes attributes of elements that match a CSS selector | `disabled` |
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| [removeElementsByAttr](https://github.com/svg/svgo/blob/master/plugins/removeElementsByAttr.js) | remove arbitrary elements by `ID` or `className` | `disabled` |
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| [addClassesToSVGElement](https://github.com/svg/svgo/blob/master/plugins/addClassesToSVGElement.js) | add classnames to an outer `<svg>` element | `disabled` |
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| [addAttributesToSVGElement](https://github.com/svg/svgo/blob/master/plugins/addAttributesToSVGElement.js) | adds attributes to an outer `<svg>` element | `disabled` |
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| [removeOffCanvasPaths](https://github.com/svg/svgo/blob/master/plugins/removeOffCanvasPaths.js) | removes elements that are drawn outside of the viewbox | `disabled` |
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| [removeStyleElement](https://github.com/svg/svgo/blob/master/plugins/removeStyleElement.js) | remove `<style>` elements | `disabled` |
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| [removeScriptElement](https://github.com/svg/svgo/blob/master/plugins/removeScriptElement.js) | remove `<script>` elements | `disabled` |
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| [reusePaths](https://github.com/svg/svgo/blob/master/plugins/reusePaths.js) | Find duplicated <path> elements and replace them with <use> links | `disabled` |
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## Other Ways to Use SVGO
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- as a web app – [SVGOMG](https://jakearchibald.github.io/svgomg/)
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- as a GitHub Action – [SVGO Action](https://github.com/marketplace/actions/svgo-action)
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- as a Grunt task – [grunt-svgmin](https://github.com/sindresorhus/grunt-svgmin)
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- as a Gulp task – [gulp-svgmin](https://github.com/ben-eb/gulp-svgmin)
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- as a Mimosa module – [mimosa-minify-svg](https://github.com/dbashford/mimosa-minify-svg)
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- as an OSX Folder Action – [svgo-osx-folder-action](https://github.com/svg/svgo-osx-folder-action)
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- as a webpack loader – [image-webpack-loader](https://github.com/tcoopman/image-webpack-loader)
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- as a Telegram Bot – [svgo_bot](https://github.com/maksugr/svgo_bot)
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- as a PostCSS plugin – [postcss-svgo](https://github.com/ben-eb/postcss-svgo)
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- as an Inkscape plugin – [inkscape-svgo](https://github.com/konsumer/inkscape-svgo)
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- as a Sketch plugin - [svgo-compressor](https://github.com/BohemianCoding/svgo-compressor)
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- as a macOS app - [Image Shrinker](https://image-shrinker.com)
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- as a Rollup plugin - [rollup-plugin-svgo](https://github.com/porsager/rollup-plugin-svgo)
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- as a VS Code plugin - [vscode-svgo](https://github.com/1000ch/vscode-svgo)
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- as a Atom plugin - [atom-svgo](https://github.com/1000ch/atom-svgo)
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- as a Sublime plugin - [Sublime-svgo](https://github.com/1000ch/Sublime-svgo)
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- as a Figma plugin - [Advanced SVG Export](https://www.figma.com/c/plugin/782713260363070260/Advanced-SVG-Export)
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- as a Linux app - [Oh My SVG](https://github.com/sonnyp/OhMySVG)
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- as a Browser extension - [SVG Gobbler](https://github.com/rossmoody/svg-gobbler)
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- as an API - [Vector Express](https://github.com/smidyo/vectorexpress-api#convertor-svgo)
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## Donators
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| [<img src="https://sheetjs.com/sketch128.png" width="80">](https://sheetjs.com/) | [<img src="https://raw.githubusercontent.com/fontello/fontello/master/fontello-image.svg" width="80">](https://fontello.com/) |
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| :------------------------------------------------------------------------------: | :---------------------------------------------------------------------------------------------------------------------------: |
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| [SheetJS LLC](https://sheetjs.com/) | [Fontello](https://fontello.com/) |
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## License and Copyright
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This software is released under the terms of the [MIT license](https://github.com/svg/svgo/blob/master/LICENSE).
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Logo by [André Castillo](https://github.com/DerianAndre).
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