english | русский

SVGO

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

Why?

SVG files, especially exported from various editors, usually contain 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.

What it can do

SVGO has a plugin-based architecture, so almost every optimization is a separate plugin.

Today we have:

| Plugin | Description | | ------ | ----------- | | cleanupAttrs | cleanup attributes from newlines, trailing, and repeating spaces | | removeDoctype | remove doctype declaration | | removeXMLProcInst | remove XML processing instructions | | removeComments | remove comments | | removeMetadata | remove <metadata> | | removeTitle | remove <title> (disabled by default) | | removeDesc | remove <desc> (only non-meaningful by default) | | removeUselessDefs | remove elements of <defs> without id | | removeXMLNS | removes xmlns attribute (for inline svg, disabled by default) | | removeEditorsNSData | remove editors namespaces, elements, and attributes | | removeEmptyAttrs | remove empty attributes | | removeHiddenElems | remove hidden elements | | removeEmptyText | remove empty Text elements | | removeEmptyContainers | remove empty Container elements | | removeViewBox | remove viewBox attribute when possible (disabled by default) | | cleanupEnableBackground | remove or cleanup enable-background attribute when possible | | minifyStyles | minify <style> elements content with CSSO | | convertStyleToAttrs | convert styles into attributes | | convertColors | convert colors (from rgb() to #rrggbb, from #rrggbb to #rgb) | | convertPathData | convert Path data to relative or absolute (whichever is shorter), convert one segment to another, trim useless delimiters, smart rounding, and much more | | convertTransform | collapse multiple transforms into one, convert matrices to the short aliases, and much more | | removeUnknownsAndDefaults | remove unknown elements content and attributes, remove attrs with default values | | removeNonInheritableGroupAttrs | remove non-inheritable group's "presentation" attributes | | removeUselessStrokeAndFill | remove useless stroke and fill attrs | | removeUnusedNS | remove unused namespaces declaration | | cleanupIDs | remove unused and minify used IDs | | cleanupNumericValues | round numeric values to the fixed precision, remove default px units | | cleanupListOfValues | round numeric values in attributes that take a list of numbers (like viewBox or enableBackground) | | moveElemsAttrsToGroup | move elements' attributes to their enclosing group | | moveGroupAttrsToElems | move some group attributes to the contained elements | | collapseGroups | collapse useless groups | | removeRasterImages | remove raster images (disabled by default) | | mergePaths | merge multiple Paths into one | | convertShapeToPath | convert some basic shapes to <path> | | sortAttrs | sort element attributes for epic readability (disabled by default) | | transformsWithOnePath | apply transforms, crop by real width, center vertical alignment, and resize SVG with one Path inside (disabled by default) | | removeDimensions | remove width/height attributes if viewBox is present (disabled by default) | | removeAttrs | remove attributes by pattern (disabled by default) | | removeElementsByAttr | remove arbitrary elements by ID or className (disabled by default) | | addClassesToSVGElement | add classnames to an outer <svg> element (disabled by default) | | addAttributesToSVGElement | adds attributes to an outer <svg> element (disabled by default) | | removeStyleElement | remove <style> elements (disabled by default) |

Want to know how it works and how to write your own plugin? Of course you want to. (동작방법)

Installation

$ [sudo] npm install -g svgo

Usage

CLI

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 or folder (by default the same as the input), "-" for STDOUT
  -p PRECISION, --precision=PRECISION : Set number of digits in the fractional part, overrides plugins params
  --config=CONFIG : Config file or JSON string 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)
  --multipass : Enable multipass
  --pretty : Make SVG pretty printed
  --indent=INDENT : Indent number when pretty printing SVGs
  -q, --quiet : Only output error messages, not regular status messages
  --show-plugins : Show available plugins and exit

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

  or:

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

• 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

Other Ways to Use SVGO

• with GUI – svgo-gui
• as a web app - SVGOMG
• as a Nodejs module – examples
• as a Grunt task – grunt-svgmin
• as a Gulp task – gulp-svgmin
• as a Mimosa module – mimosa-minify-svg
• as an OSX Folder Action – svgo-osx-folder-action
• as a webpack loader – image-webpack-loader
• as a Telegram Bot – svgo_bot
• as a PostCSS plugin - postcss-svgo

License and Copyright

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

Logo by Yegor Bolshakov.