The svgo npm package is a Node.js-based tool for optimizing SVG vector graphics files. SVGO stands for Scalable Vector Graphics Optimizer. It works by applying a series of transformations and optimizations to SVG files to reduce their size without affecting their visual quality. This is particularly useful for web development, where smaller file sizes can lead to faster load times and better performance.
Minify SVG files
This feature allows you to minify SVG files by removing unnecessary data without affecting the rendering of the SVG. The code sample demonstrates how to use the optimize function to minify an SVG string.
const { optimize } = require('svgo');
const svgString = '<svg ...> ... </svg>';
const result = optimize(svgString, { path: 'path/to/svg/file.svg' });
console.log(result.data);Remove specified attributes
This feature allows you to remove specified attributes from SVG elements. The code sample shows how to use the removeAttributesBySelector plugin to remove the 'fill' attribute from all elements that have it.
const { optimize } = require('svgo');
const svgString = '<svg ...> ... </svg>';
const result = optimize(svgString, {
plugins: [
{
name: 'removeAttributesBySelector',
params: {
selector: '[fill]',
attributes: 'fill'
}
}
]
});
console.log(result.data);Prettify SVG files
This feature allows you to prettify SVG files by reformatting them with consistent indentation and spacing. The code sample demonstrates how to use the js2svg option with the pretty parameter set to true.
const { optimize } = require('svgo');
const svgString = '<svg ...> ... </svg>';
const result = optimize(svgString, {
plugins: [
'preset-default',
'sortAttrs',
{
name: 'removeAttrs',
params: { attrs: '(stroke|fill)' }
}
],
js2svg: { pretty: true }
});
console.log(result.data);imagemin-svgo is a plugin for Imagemin, which is a general image optimization framework. While svgo focuses solely on SVG files, Imagemin can handle various image formats when combined with the appropriate plugins. Imagemin-svgo brings the capabilities of svgo to the Imagemin ecosystem.
svg-sprite is a package that takes a set of SVG files and combines them into a single sprite sheet. While svgo optimizes individual SVG files, svg-sprite focuses on creating an efficient way to bundle multiple SVGs for use on the web.
svg-crowbar is a tool designed to extract SVG elements from an HTML document and download them as standalone SVG files. It is different from svgo, which optimizes existing SVG files rather than extracting them from HTML.
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SVG Optimizer is a Nodejs-based tool for optimizing SVG vector graphics files.
SVG files, especially exported from various editors, usually contains a lot of redundant and useless information such as editor metadata, comments, hidden elements, default or non-optimal values and other stuff that can be safely removed or converted without affecting SVG rendering result.
SVGO has a plugin-based architecture, so almost every optimization is a separate plugin.
Today we have:
<metadata>viewBox attribute when possibleenable-background attribute when possiblergb() to #rrggbb, from #rrggbb to #rgb)Want to know how it works and how to write your own plugin? Of course you want to.
$ [sudo] npm install -g svgo
Usage:
svgo [OPTIONS] [ARGS]
Options:
-h, --help : Help
-v, --version : Version
-i INPUT, --input=INPUT : Input file, "-" for STDIN
-s STRING, --string=STRING : Input SVG data string
-f FOLDER, --folder=FOLDER : Input folder, optimize and rewrite all *.svg files
-o OUTPUT, --output=OUTPUT : Output file (by default the same as the input), "-" for STDOUT
--config=CONFIG : Config file to extend or replace default
--disable=DISABLE : Disable plugin by name
--enable=ENABLE : Enable plugin by name
--datauri=DATAURI : Output as Data URI string (base64, URI encoded or unencoded)
--pretty : Make SVG pretty printed
Arguments:
INPUT : Alias to --input
OUTPUT : Alias to --output
with files:
$ svgo test.svg
or:
$ svgo test.svg test.min.svg
with STDIN / STDOUT:
$ cat test.svg | svgo -i - -o - > test.min.svg
with folder
$ svgo -f ../path/to/folder/with/svg/files
with strings:
$ svgo -s '<svg version="1.1">test</svg>' -o test.min.svg
or even with Data URI base64:
$ svgo -s 'data:image/svg+xml;base64,…' -o test.min.svg
with SVGZ:
from .svgz to .svg:
$ gunzip -c test.svgz | svgo -i - -o test.min.svg
from .svg to .svgz:
$ svgo test.svg -o - | gzip -cfq9 > test.svgz
with GUI – svgo-gui
as a Nodejs module – examples
as a Grunt task – svgo-grunt
as an OSX Folder Action – svgo-osx-folder-action
This software is released under the terms of the MIT license.
Logo by Yegor Bolshakov.
FAQs
Nodejs-based tool for optimizing SVG vector graphics files
The npm package svgo receives a total of 3,336,927 weekly downloads. As such, svgo popularity was classified as popular.
We found that svgo demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
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