RunKit + npm: mini-svg-data-uri

var miniSvgDataUri = require("mini-svg-data-uri"); var svg = '<svg version="1.1" id="level1" xmlns="http://www.w3.org/2000/svg" x="0" y="0" viewBox="0 0 16 20" xml:space="preserve"><style>.st0{fill:#020203}.st1{fill:#010202}</style><path class="st0" d="M16 4v15c0 .6-.4 1-1 1H1c-.6 0-1-.4-1-1V4c0-.6.4-1 1-1h2v1H1v15h14V4h-2V3h2c.6 0 1 .4 1 1z"/><path class="st0" d="M10 2c0-1.1-.9-2-2-2S6 .9 6 2H4v3h8V2h-2zM3.7 7H14v1H3.7z"/><circle class="st1" cx="2.6" cy="7.5" r=".6"/><path class="st0" d="M3.7 16H14v1H3.7z"/><circle class="st1" cx="2.6" cy="16.5" r=".6"/><g><path class="st0" d="M3.7 10H14v1H3.7z"/><circle class="st1" cx="2.6" cy="10.5" r=".6"/></g><g><path class="st0" d="M3.7 13H14v1H3.7z"/><circle class="st1" cx="2.6" cy="13.5" r=".6"/></g></svg>'; var optimizedSVGDataURI = svgToTinyDataUri(svg);