@innocuous/svgo
Advanced tools
SVGO (SVG Optimizer) is a Nodejs-based tool for optimizing SVG vector graphics files.
This is a fork of the original SVGO. Their work is brilliant - please support them.
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.
SVGO has a plugin-based architecture, so almost every optimization is a separate plugin.
Today we have:
| Plugin | Description | Default |
|---|---|---|
| cleanupAttrs | cleanup attributes from newlines, trailing, and repeating spaces | enabled |
| inlineStyles | move and merge styles from <style> elements to element style attributes | enabled |
| removeDoctype | remove doctype declaration | enabled |
| removeXMLProcInst | remove XML processing instructions | enabled |
| removeComments | remove comments | enabled |
| removeMetadata | remove <metadata> | enabled |
| removeTitle | remove <title> | enabled |
| removeDesc | remove <desc> | enabled |
| removeUselessDefs | remove elements of <defs> without id | enabled |
| removeXMLNS | removes xmlns attribute (for inline svg) | disabled |
| removeEditorsNSData | remove editors namespaces, elements, and attributes | enabled |
| removeEmptyAttrs | remove empty attributes | enabled |
| removeHiddenElems | remove hidden elements | enabled |
| removeEmptyText | remove empty Text elements | enabled |
| removeEmptyContainers | remove empty Container elements | enabled |
| removeViewBox | remove viewBox attribute when possible | enabled |
| cleanupEnableBackground | remove or cleanup enable-background attribute when possible | enabled |
| minifyStyles | minify <style> elements content with CSSO | enabled |
| convertStyleToAttrs | convert styles into attributes | enabled |
| convertColors | convert colors (from rgb() to #rrggbb, from #rrggbb to #rgb) | enabled |
| convertPathData | convert Path data to relative or absolute (whichever is shorter), convert one segment to another, trim useless delimiters, smart rounding, and much more | enabled |
| convertTransform | collapse multiple transforms into one, convert matrices to the short aliases, and much more | enabled |
| removeUnknownsAndDefaults | remove unknown elements content and attributes, remove attrs with default values | enabled |
| removeNonInheritableGroupAttrs | remove non-inheritable group's "presentation" attributes | enabled |
| removeUselessStrokeAndFill | remove useless stroke and fill attrs | enabled |
| removeUnusedNS | remove unused namespaces declaration | enabled |
| prefixIds | prefix IDs and classes with the SVG filename or an arbitrary string | disabled |
| cleanupIDs | remove unused and minify used IDs | enabled |
| cleanupNumericValues | round numeric values to the fixed precision, remove default px units | enabled |
| cleanupListOfValues | round numeric values in attributes that take a list of numbers (like viewBox or enable-background) | disabled |
| moveElemsAttrsToGroup | move elements' attributes to their enclosing group | enabled |
| moveGroupAttrsToElems | move some group attributes to the contained elements | enabled |
| collapseGroups | collapse useless groups | enabled |
| removeRasterImages | remove raster images | disabled |
| mergePaths | merge multiple Paths into one | enabled |
| convertShapeToPath | convert some basic shapes to <path> | enabled |
| convertEllipseToCircle | convert non-eccentric <ellipse> to <circle> | enabled |
| sortAttrs | sort element attributes for epic readability | disabled |
| sortDefsChildren | sort children of <defs> in order to improve compression | enabled |
| removeDimensions | remove width/height and add viewBox if it's missing (opposite to removeViewBox, disable it first) | disabled |
| removeAttrs | remove attributes by pattern | disabled |
| removeAttributesBySelector | removes attributes of elements that match a css selector | disabled |
| removeElementsByAttr | remove arbitrary elements by ID or className | disabled |
| addClassesToSVGElement | add classnames to an outer <svg> element | disabled |
| addAttributesToSVGElement | adds attributes to an outer <svg> element | disabled |
| removeOffCanvasPaths | removes elements that are drawn outside of the viewbox | disabled |
| removeStyleElement | remove <style> elements | disabled |
| removeScriptElement | remove <script> elements | disabled |
| reusePaths | Find duplicated elements and replace them with links | disabled |
Want to know how it works and how to write your own plugin? Of course you want to. (동작방법)
$ [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 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=PLUGIN : Disable plugin by name, "--disable=PLUGIN1,PLUGIN2" for multiple plugins
--enable=PLUGIN : Enable plugin by name, "--enable=PLUGIN3,PLUGIN4" for multiple plugins
--datauri=DATAURI : Output as Data URI string (base64, URI encoded or unencoded)
--multipass : Pass over SVGs multiple times to ensure all optimizations are applied
--pretty : Make SVG pretty printed
--indent=INDENT : Indent number when pretty printing SVGs
-r, --recursive : Use with '-f'. Optimizes *.svg files in folders recursively.
-q, --quiet : Only output error messages, not regular status messages
--show-plugins : Show available plugins and exit
Arguments:
INPUT : Alias to --input
with files:
$ svgo test.svg
or:
$ svgo *.svg
$ svgo test.svg -o test.min.svg
$ svgo test.svg other.svg third.svg
$ svgo test.svg other.svg third.svg -o test.min.svg -o other.min.svg -o third.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
$ svgo *.svg -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
This software is released under the terms of the MIT license.
FAQs
Nodejs-based tool for optimizing SVG vector graphics files
We found that @innocuous/svgo demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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