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SVGO
SVG Optimizer is a Nodejs-based tool for optimizing SVG vector graphics files.
Why?
SVG files, especially exported from various editors, usually contains a lot of redundant and useless information such as editor metadata, comments, hidden elements and other stuff that can be safely removed 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:
- [ > ] cleanup attributes from newlines, trailing and repeating spaces
- [ > ] remove doctype declaration
- [ > ] remove XML processing instructions
- [ > ] remove comments
- [ > ] remove metadata
- [ > ] remove editors namespaces, elements and attributes
- [ > ] remove empty attributes
- [ > ] remove default "px" unit
- [ > ] remove a lot of hidden elements
- [ > ] remove empty Text elements
- [ > ] remove empty Container elements
- [ > ] remove viewBox attribute
- [ > ] remove or cleanup enable-background attribute
- [ > ] cleanup SVG element from useless attributes
- [ > ] convert styles into attributes
- [ > ] convert colors (from rgb() to #rrggbb, from #rrggbb to #rgb)
- [ > ] move elements attributes to the existing group wrapper
- [ > ] collapse groups
But it's not only about rude removing, SVG has a strict specification with a lot of opportunities for optimizations, default values, geometry hacking and more.
How-to instructions and plugins API docs will coming ASAP.
How to use
npm install -g svgo
Usage:
svgo [OPTIONS] [ARGS]
Options:
-h, --help : Help
-v, --version : Version
-c CONFIG, --config=CONFIG : Local config
-d DISABLE, --disable=DISABLE : Disable plugin
-e ENABLE, --enable=ENABLE : Enable plugin
-i INPUT, --input=INPUT : Input file (default: stdin)
-o OUTPUT, --output=OUTPUT : Output file (default: stdout)
-p, --pretty : Make SVG pretty printed
svgo -i test.svg -o test.min.svg
cat test.svg | svgo -d removeDoctype -d removeComment > test.min.svg
TODO
- PhantomJS-based server-side SVG rendering for "before vs after visual tests"
- documentation and "plugins how-to"
- more plugins
- more unit tests
- online SVGO web service
- …