SVG Loaders is a set of Loading icons and small animations built purely in SVG, no CSS or JS.
Usage
Download or bower install svg-loaders
<img src="svg-loaders/puff.svg" />
An icon’s color can be manipulated by changing the fill attribute in the SVG file.
<svg fill="#fff" width="140" height="64" viewBox="0 0 140 64" xmlns="http://www.w3.org/2000/svg">
All SVG files are fairly small in size, but you can make them even smaller by minifying with something like SVGO.