SVG processor and minifier

similar to SVGO (most plugins are based from svgo)

const svgz = require('svgz');
const fs = require('fs');

const svgBuf = fs.readFileSync('./test.svg');
// const result = svgz(svgBuf); // call it with default options
// const result = svgz(svgBuf, {indent:'\t', decimals:3}); // call it with different global options
// and with specific plugins options:
const result = svgz(svgBuf, {
	indent: '\t', 
	decimals: 3,
	plugins: {
		addDefaultFonts: {families: ['sans-serif']},
		removeMetadata: false // disable this one
	}
});
fs.writeFileSync('./test.min.svg', result);

Plugins

name	description	active
removeMetadata	removes <metadata> elements	✔️
cleanupIds	removes unused id's attributes	✔️
cleanupViewBox	moves the viewBox origin to 0 0 (and adjust transform on children)
moveElemsAttrsToGroup	moves up attributes (except transform) to a group wrapper	✔️
moveGroupAttrsToElems	moves some group attributes to the content elements	✔️
collapseGroups	collapses/unwrap useless groups	✔️
convertPathData	optimizes path data: writes in shorter form, applies transformations	✔️
convertTransform	collapses multiple transformations and optimizes it	✔️
cleanupNumericValues	rounds numeric values to the fixed precision, removes default ‘px’ units, and empty attributes	✔️
addDefaultFonts	ensure fallbacks font-family, useful when using web-fonts

Todos:

• improve jsdom's getComputedSyle to work with presentational attributes (<path stroke="blue") and inherited attributes) or directly use nwsapi on top of sax
• minifyStyles
• removeUselessStrokeAndFills
• removeEmptyTexts
• pathData
• merge tranform in shapes too (circle, rect, line..) when possible and shorter
• ... most svgo plugins and tests