The definitive source of the best
JavaScript libraries, frameworks, and plugins.

  • ×


    SVGO is a Nodejs-based tool for optimizing SVG vector graphics files.
    Filed under  › 

    • 🔾88%Overall
    • 19,587
    • 7.3 days
    • 🕩1390
    • 👥19
    SVGO logo

    SVGO npm version Discord

    SVG Optimizer is a Node.js-based tool for optimizing SVG vector graphics files.


    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.


    Via npm:

    npm -g install svgo

    Via yarn:

    yarn global add svgo

    CLI usage

    Processing single files:

    svgo one.svg two.svg -o one.min.svg two.min.svg

    Processing directory of svg files, recursively using -f, --folder:

    svgo -f ./path/to/folder/with/svg/files -o ./path/to/folder/with/svg/output

    Help for advanced usage:

    svgo --help


    SVGO has a plugin-based architecture, separate plugins allows various xml svg optimizations. See built-in plugins. SVGO automatically loads configuration from svgo.config.js or from --config ./path/myconfig.js. Some general options can be configured via CLI.

    // svgo.config.js
    module.exports = {
      multipass: true, // boolean. false by default
      datauri: 'enc', // 'base64' (default), 'enc' or 'unenc'.
      js2svg: {
        indent: 2, // string with spaces or number of spaces. 4 by default
        pretty: true, // boolean, false by default
      plugins: [
        // set of built-in plugins enabled by default
        // enable built-in plugins by name
        // or by expanded notation which allows to configure plugin
          name: 'sortAttrs',
          params: {
            xmlnsOrder: 'alphabetical',

    Default preset

    When extending default configuration specify preset-default plugin to enable optimisations. Each plugin of default preset can be disabled or configured with "overrides" param.

    module.exports = {
      plugins: [
          name: 'preset-default',
          params: {
            overrides: {
              // customize default plugin options
              inlineStyles: {
                onlyMatchedOnce: false,
              // or disable plugins
              removeDoctype: false,

    The default preset includes plugins marked with 'Yes' in the plugin list below.

    Custom plugin

    It's also possible to specify a custom plugin:

    const anotherCustomPlugin = require('./another-custom-plugin.js');
    module.exports = {
      plugins: [
          name: 'customPluginName',
          params: {
            optionName: 'optionValue',
          fn: (ast, params, info) => {},

    API usage

    SVGO provides a few low level utilities.


    The core of SVGO is optimize function.

    const { optimize } = require('svgo');
    const result = optimize(svgString, {
      // optional but recommended field
      path: 'path-to.svg',
      // all config fields are also available here
      multipass: true,
    const optimizedSvgString =;


    If you write a tool on top of SVGO you might need a way to load SVGO config.

    const { loadConfig } = require('svgo');
    const config = await loadConfig();

    You can also specify a relative or absolute path and customize the current working directory.

    const config = await loadConfig(configFile, cwd);


    SVG won't scale when CSS is applied on it.

    Observed Problem: I'm using my SVG files on a website. It looks like the rendered SVG doesn't scale when the dimensions are altered using CSS.

    Possible Solution: Try disabling removeViewBox in the configuration. See issue #1128 for details and discussion.

    Built-in plugins

    Plugin Description Default
    addAttributesToSVGElement adds attributes to an outer <svg> element
    addClassesToSVGElement add classnames to an outer <svg> element
    cleanupAttrs cleanup attributes from newlines, trailing, and repeating spaces Yes
    cleanupEnableBackground remove or cleanup enable-background attribute when possible Yes
    cleanupIds remove unused and minify used IDs Yes
    cleanupListOfValues round numeric values in attributes that take a list of numbers (like viewBox or enable-background)
    cleanupNumericValues round numeric values to the fixed precision, remove default px units Yes
    collapseGroups collapse useless groups Yes
    convertColors convert colors (from rgb() to #rrggbb, from #rrggbb to #rgb) Yes
    convertEllipseToCircle convert non-eccentric <ellipse> to <circle> Yes
    convertPathData convert Path data to relative or absolute (whichever is shorter), convert one segment to another, trim useless delimiters, smart rounding, and much more Yes
    convertShapeToPath convert some basic shapes to <path> Yes
    convertStyleToAttrs convert styles into attributes
    convertTransform collapse multiple transforms into one, convert matrices to the short aliases, and much more Yes
    inlineStyles move and merge styles from <style> elements to element style attributes Yes
    mergePaths merge multiple Paths into one Yes
    mergeStyles merge multiple style elements into one Yes
    minifyStyles minify <style> elements content with CSSO Yes
    moveElemsAttrsToGroup move elements' attributes to their enclosing group Yes
    moveGroupAttrsToElems move some group attributes to the contained elements Yes
    prefixIds prefix IDs and classes with the SVG filename or an arbitrary string
    removeAttributesBySelector removes attributes of elements that match a CSS selector
    removeAttrs remove attributes by pattern
    removeComments remove comments Yes
    removeDesc remove <desc> Yes
    removeDimensions remove width/height and add viewBox if it's missing (opposite to removeViewBox, disable it first)
    removeDoctype remove doctype declaration Yes
    removeEditorsNSData remove editors namespaces, elements, and attributes Yes
    removeElementsByAttr remove arbitrary elements by ID or className
    removeEmptyAttrs remove empty attributes Yes
    removeEmptyContainers remove empty Container elements Yes
    removeEmptyText remove empty Text elements Yes
    removeHiddenElems remove hidden elements Yes
    removeMetadata remove <metadata> Yes
    removeNonInheritableGroupAttrs remove non-inheritable group's "presentation" attributes Yes
    removeOffCanvasPaths removes elements that are drawn outside of the viewbox
    removeRasterImages remove raster images
    removeScriptElement remove <script> elements
    removeStyleElement remove <style> elements
    removeTitle remove <title> Yes
    removeUnknownsAndDefaults remove unknown elements content and attributes, remove attributes with default values Yes
    removeUnusedNS remove unused namespaces declaration Yes
    removeUselessDefs remove elements of <defs> without id Yes
    removeUselessStrokeAndFill remove useless stroke and fill attributes Yes
    removeViewBox remove viewBox attribute when possible Yes
    removeXMLNS removes the xmlns attribute (for inline SVG)
    removeXMLProcInst remove XML processing instructions Yes
    reusePaths Find duplicated elements and replace them with links
    sortAttrs sort element attributes for epic readability Yes
    sortDefsChildren sort children of <defs> in order to improve compression Yes

    Other ways to use SVGO

    Method Reference
    Web app SVGOMG
    GitHub Action SVGO Action
    Grunt task grunt-svgmin
    Gulp task gulp-svgmin
    Mimosa module mimosa-minify-svg
    OSX Folder Action svgo-osx-folder-action
    Webpack loader image-webpack-loader
    Telegram Bot svgo_bot
    PostCSS plugin postcss-svgo
    Inkscape plugin inkscape-svgo
    Sketch plugin svgo-compressor
    macOS app Image Shrinker
    Rollup plugin rollup-plugin-svgo
    VS Code plugin vscode-svgo
    Atom plugin atom-svgo
    Sublime plugin Sublime-svgo
    Figma plugin Advanced SVG Export
    Linux app Oh My SVG
    Browser extension SVG Gobbler
    API Vector Express


    SheetJS LLC Fontello

    This software is released under the terms of the MIT license.

    Logo by André Castillo.

    Show All