source: trip-planner-front/node_modules/svgo/README.md@ e29cc2e

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1<div align="center">
2 <img src="./logo/logo-web.svg" width="348.61" height="100" alt="SVGO logo"/>
3</div>
4
5## SVGO [![npm version](https://img.shields.io/npm/v/svgo)](https://npmjs.org/package/svgo) [![Discord](https://img.shields.io/discord/815166721315831868)](https://discord.gg/z8jX8NYxrE)
6
7**SVG O**ptimizer is a Node.js-based tool for optimizing SVG vector graphics files.
8
9## Why?
10
11SVG 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.
12
13## Installation
14
15```sh
16npm -g install svgo
17```
18
19or
20
21```sh
22yarn global add svgo
23```
24
25## CLI usage
26
27```sh
28svgo one.svg two.svg -o one.min.svg two.min.svg
29```
30
31Or use the `--folder`/`-f` flag to optimize a whole folder of SVG icons
32
33```sh
34svgo -f ./path/to/folder/with/svg/files -o ./path/to/folder/with/svg/output
35```
36
37See help for advanced usage
38
39```sh
40svgo --help
41```
42
43## Configuration
44
45Some options can be configured with CLI though it may be easier to have the configuration in a separate file.
46SVGO automatically loads configuration from `svgo.config.js` or module specified with `--config` flag.
47
48```js
49module.exports = {
50 multipass: true, // boolean. false by default
51 datauri: 'enc', // 'base64', 'enc' or 'unenc'. 'base64' by default
52 js2svg: {
53 indent: 2, // string with spaces or number of spaces. 4 by default
54 pretty: true, // boolean, false by default
55 },
56};
57```
58
59SVGO has a plugin-based architecture, so almost every optimization is a separate plugin.
60There is a set of [built-in plugins](#built-in-plugins). See how to configure them:
61
62```js
63module.exports = {
64 plugins: [
65 // enable a built-in plugin by name
66 'prefixIds',
67
68 // or by expanded version
69 {
70 name: 'prefixIds',
71 },
72
73 // some plugins allow/require to pass options
74 {
75 name: 'prefixIds',
76 params: {
77 prefix: 'my-prefix',
78 },
79 },
80 ],
81};
82```
83
84The default preset of plugins is fully overridden if the `plugins` field is specified.
85Use `preset-default` plugin to customize plugins options.
86
87```js
88module.exports = {
89 plugins: [
90 {
91 name: 'preset-default',
92 params: {
93 overrides: {
94 // customize options for plugins included in preset
95 inlineStyles: {
96 onlyMatchedOnce: false,
97 },
98
99 // or disable plugins
100 removeDoctype: false,
101 },
102 },
103 },
104
105 // enable builtin plugin not included in default preset
106 'prefixIds',
107
108 // enable and configure builtin plugin not included in preset
109 {
110 name: 'sortAttrs',
111 params: {
112 xmlnsOrder: 'alphabetical',
113 },
114 },
115 ],
116};
117```
118
119Default preset includes the following list of plugins:
120
121- removeDoctype
122- removeXMLProcInst
123- removeComments
124- removeMetadata
125- removeEditorsNSData
126- cleanupAttrs
127- mergeStyles
128- inlineStyles
129- minifyStyles
130- cleanupIDs
131- removeUselessDefs
132- cleanupNumericValues
133- convertColors
134- removeUnknownsAndDefaults
135- removeNonInheritableGroupAttrs
136- removeUselessStrokeAndFill
137- removeViewBox
138- cleanupEnableBackground
139- removeHiddenElems
140- removeEmptyText
141- convertShapeToPath
142- convertEllipseToCircle
143- moveElemsAttrsToGroup
144- moveGroupAttrsToElems
145- collapseGroups
146- convertPathData
147- convertTransform
148- removeEmptyAttrs
149- removeEmptyContainers
150- mergePaths
151- removeUnusedNS
152- sortDefsChildren
153- removeTitle
154- removeDesc
155
156It's also possible to specify a custom plugin:
157
158```js
159const anotherCustomPlugin = require('./another-custom-plugin.js');
160module.exports = {
161 plugins: [
162 {
163 name: 'customPluginName',
164 type: 'perItem', // 'perItem', 'perItemReverse' or 'full'
165 params: {
166 optionName: 'optionValue',
167 },
168 fn: (ast, params, info) => {},
169 },
170 anotherCustomPlugin,
171 ],
172};
173```
174
175## API usage
176
177SVGO provides a few low level utilities.
178
179### optimize
180
181The core of SVGO is `optimize` function.
182
183```js
184const { optimize } = require('svgo');
185const result = optimize(svgString, {
186 // optional but recommended field
187 path: 'path-to.svg',
188 // all config fields are also available here
189 multipass: true,
190});
191const optimizedSvgString = result.data;
192```
193
194### loadConfig
195
196If you write a tool on top of SVGO you might need a way to load SVGO config.
197
198```js
199const { loadConfig } = require('svgo');
200const config = await loadConfig();
201
202// you can also specify a relative or absolute path and customize the current working directory
203const config = await loadConfig(configFile, cwd);
204```
205
206## Built-in plugins
207
208| Plugin | Description | Default |
209| ------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- |
210| [cleanupAttrs](https://github.com/svg/svgo/blob/master/plugins/cleanupAttrs.js) | cleanup attributes from newlines, trailing, and repeating spaces | `enabled` |
211| [mergeStyles](https://github.com/svg/svgo/blob/master/plugins/mergeStyles.js) | merge multiple style elements into one | `enabled` |
212| [inlineStyles](https://github.com/svg/svgo/blob/master/plugins/inlineStyles.js) | move and merge styles from `<style>` elements to element `style` attributes | `enabled` |
213| [removeDoctype](https://github.com/svg/svgo/blob/master/plugins/removeDoctype.js) | remove `doctype` declaration | `enabled` |
214| [removeXMLProcInst](https://github.com/svg/svgo/blob/master/plugins/removeXMLProcInst.js) | remove XML processing instructions | `enabled` |
215| [removeComments](https://github.com/svg/svgo/blob/master/plugins/removeComments.js) | remove comments | `enabled` |
216| [removeMetadata](https://github.com/svg/svgo/blob/master/plugins/removeMetadata.js) | remove `<metadata>` | `enabled` |
217| [removeTitle](https://github.com/svg/svgo/blob/master/plugins/removeTitle.js) | remove `<title>` | `enabled` |
218| [removeDesc](https://github.com/svg/svgo/blob/master/plugins/removeDesc.js) | remove `<desc>` | `enabled` |
219| [removeUselessDefs](https://github.com/svg/svgo/blob/master/plugins/removeUselessDefs.js) | remove elements of `<defs>` without `id` | `enabled` |
220| [removeXMLNS](https://github.com/svg/svgo/blob/master/plugins/removeXMLNS.js) | removes the `xmlns` attribute (for inline SVG) | `disabled` |
221| [removeEditorsNSData](https://github.com/svg/svgo/blob/master/plugins/removeEditorsNSData.js) | remove editors namespaces, elements, and attributes | `enabled` |
222| [removeEmptyAttrs](https://github.com/svg/svgo/blob/master/plugins/removeEmptyAttrs.js) | remove empty attributes | `enabled` |
223| [removeHiddenElems](https://github.com/svg/svgo/blob/master/plugins/removeHiddenElems.js) | remove hidden elements | `enabled` |
224| [removeEmptyText](https://github.com/svg/svgo/blob/master/plugins/removeEmptyText.js) | remove empty Text elements | `enabled` |
225| [removeEmptyContainers](https://github.com/svg/svgo/blob/master/plugins/removeEmptyContainers.js) | remove empty Container elements | `enabled` |
226| [removeViewBox](https://github.com/svg/svgo/blob/master/plugins/removeViewBox.js) | remove `viewBox` attribute when possible | `enabled` |
227| [cleanupEnableBackground](https://github.com/svg/svgo/blob/master/plugins/cleanupEnableBackground.js) | remove or cleanup `enable-background` attribute when possible | `enabled` |
228| [minifyStyles](https://github.com/svg/svgo/blob/master/plugins/minifyStyles.js) | minify `<style>` elements content with [CSSO](https://github.com/css/csso) | `enabled` |
229| [convertStyleToAttrs](https://github.com/svg/svgo/blob/master/plugins/convertStyleToAttrs.js) | convert styles into attributes | `disabled` |
230| [convertColors](https://github.com/svg/svgo/blob/master/plugins/convertColors.js) | convert colors (from `rgb()` to `#rrggbb`, from `#rrggbb` to `#rgb`) | `enabled` |
231| [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` |
232| [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` |
233| [removeUnknownsAndDefaults](https://github.com/svg/svgo/blob/master/plugins/removeUnknownsAndDefaults.js) | remove unknown elements content and attributes, remove attributes with default values | `enabled` |
234| [removeNonInheritableGroupAttrs](https://github.com/svg/svgo/blob/master/plugins/removeNonInheritableGroupAttrs.js) | remove non-inheritable group's "presentation" attributes | `enabled` |
235| [removeUselessStrokeAndFill](https://github.com/svg/svgo/blob/master/plugins/removeUselessStrokeAndFill.js) | remove useless `stroke` and `fill` attributes | `enabled` |
236| [removeUnusedNS](https://github.com/svg/svgo/blob/master/plugins/removeUnusedNS.js) | remove unused namespaces declaration | `enabled` |
237| [prefixIds](https://github.com/svg/svgo/blob/master/plugins/prefixIds.js) | prefix IDs and classes with the SVG filename or an arbitrary string | `disabled` |
238| [cleanupIDs](https://github.com/svg/svgo/blob/master/plugins/cleanupIDs.js) | remove unused and minify used IDs | `enabled` |
239| [cleanupNumericValues](https://github.com/svg/svgo/blob/master/plugins/cleanupNumericValues.js) | round numeric values to the fixed precision, remove default `px` units | `enabled` |
240| [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` |
241| [moveElemsAttrsToGroup](https://github.com/svg/svgo/blob/master/plugins/moveElemsAttrsToGroup.js) | move elements' attributes to their enclosing group | `enabled` |
242| [moveGroupAttrsToElems](https://github.com/svg/svgo/blob/master/plugins/moveGroupAttrsToElems.js) | move some group attributes to the contained elements | `enabled` |
243| [collapseGroups](https://github.com/svg/svgo/blob/master/plugins/collapseGroups.js) | collapse useless groups | `enabled` |
244| [removeRasterImages](https://github.com/svg/svgo/blob/master/plugins/removeRasterImages.js) | remove raster images | `disabled` |
245| [mergePaths](https://github.com/svg/svgo/blob/master/plugins/mergePaths.js) | merge multiple Paths into one | `enabled` |
246| [convertShapeToPath](https://github.com/svg/svgo/blob/master/plugins/convertShapeToPath.js) | convert some basic shapes to `<path>` | `enabled` |
247| [convertEllipseToCircle](https://github.com/svg/svgo/blob/master/plugins/convertEllipseToCircle.js) | convert non-eccentric `<ellipse>` to `<circle>` | `enabled` |
248| [sortAttrs](https://github.com/svg/svgo/blob/master/plugins/sortAttrs.js) | sort element attributes for epic readability | `disabled` |
249| [sortDefsChildren](https://github.com/svg/svgo/blob/master/plugins/sortDefsChildren.js) | sort children of `<defs>` in order to improve compression | `enabled` |
250| [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` |
251| [removeAttrs](https://github.com/svg/svgo/blob/master/plugins/removeAttrs.js) | remove attributes by pattern | `disabled` |
252| [removeAttributesBySelector](https://github.com/svg/svgo/blob/master/plugins/removeAttributesBySelector.js) | removes attributes of elements that match a CSS selector | `disabled` |
253| [removeElementsByAttr](https://github.com/svg/svgo/blob/master/plugins/removeElementsByAttr.js) | remove arbitrary elements by `ID` or `className` | `disabled` |
254| [addClassesToSVGElement](https://github.com/svg/svgo/blob/master/plugins/addClassesToSVGElement.js) | add classnames to an outer `<svg>` element | `disabled` |
255| [addAttributesToSVGElement](https://github.com/svg/svgo/blob/master/plugins/addAttributesToSVGElement.js) | adds attributes to an outer `<svg>` element | `disabled` |
256| [removeOffCanvasPaths](https://github.com/svg/svgo/blob/master/plugins/removeOffCanvasPaths.js) | removes elements that are drawn outside of the viewbox | `disabled` |
257| [removeStyleElement](https://github.com/svg/svgo/blob/master/plugins/removeStyleElement.js) | remove `<style>` elements | `disabled` |
258| [removeScriptElement](https://github.com/svg/svgo/blob/master/plugins/removeScriptElement.js) | remove `<script>` elements | `disabled` |
259| [reusePaths](https://github.com/svg/svgo/blob/master/plugins/reusePaths.js) | Find duplicated <path> elements and replace them with <use> links | `disabled` |
260
261## Other Ways to Use SVGO
262
263- as a web app – [SVGOMG](https://jakearchibald.github.io/svgomg/)
264- as a GitHub Action – [SVGO Action](https://github.com/marketplace/actions/svgo-action)
265- as a Grunt task – [grunt-svgmin](https://github.com/sindresorhus/grunt-svgmin)
266- as a Gulp task – [gulp-svgmin](https://github.com/ben-eb/gulp-svgmin)
267- as a Mimosa module – [mimosa-minify-svg](https://github.com/dbashford/mimosa-minify-svg)
268- as an OSX Folder Action – [svgo-osx-folder-action](https://github.com/svg/svgo-osx-folder-action)
269- as a webpack loader – [image-webpack-loader](https://github.com/tcoopman/image-webpack-loader)
270- as a Telegram Bot – [svgo_bot](https://github.com/maksugr/svgo_bot)
271- as a PostCSS plugin – [postcss-svgo](https://github.com/ben-eb/postcss-svgo)
272- as an Inkscape plugin – [inkscape-svgo](https://github.com/konsumer/inkscape-svgo)
273- as a Sketch plugin - [svgo-compressor](https://github.com/BohemianCoding/svgo-compressor)
274- as a macOS app - [Image Shrinker](https://image-shrinker.com)
275- as a Rollup plugin - [rollup-plugin-svgo](https://github.com/porsager/rollup-plugin-svgo)
276- as a VS Code plugin - [vscode-svgo](https://github.com/1000ch/vscode-svgo)
277- as a Atom plugin - [atom-svgo](https://github.com/1000ch/atom-svgo)
278- as a Sublime plugin - [Sublime-svgo](https://github.com/1000ch/Sublime-svgo)
279- as a Figma plugin - [Advanced SVG Export](https://www.figma.com/c/plugin/782713260363070260/Advanced-SVG-Export)
280- as a Linux app - [Oh My SVG](https://github.com/sonnyp/OhMySVG)
281- as a Browser extension - [SVG Gobbler](https://github.com/rossmoody/svg-gobbler)
282- as an API - [Vector Express](https://github.com/smidyo/vectorexpress-api#convertor-svgo)
283
284## Donators
285
286| [<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/) |
287| :------------------------------------------------------------------------------: | :---------------------------------------------------------------------------------------------------------------------------: |
288| [SheetJS LLC](https://sheetjs.com/) | [Fontello](https://fontello.com/) |
289
290## License and Copyright
291
292This software is released under the terms of the [MIT license](https://github.com/svg/svgo/blob/master/LICENSE).
293
294Logo by [André Castillo](https://github.com/DerianAndre).
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