Description: SVG Circus enables you to create cool animated SVG spinners, loaders and other looped animations in seconds.

Description: A lazy-loading progressive image similar to those seen on Facebook and Medium.

Description: A collection of more than 500 CSS-only loading animations using a single element.

Description: Include pace.js and a CSS theme of your choice, and you get a beautiful progress indicator for your page load and ajax navigation.
No need to hook into any of your code, progress is detected automatically.