Features

* No images, no external CSS

* No dependencies

* Highly configurable

* Resolution independent

* Works in all major browsers, including IE6

* Smaller than an animated GIF (3K minified, 1.7K gzipped)

* MIT License

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How it works

Spin.js uses the CSS3 to render the UI, falling back to VML Internet Explorer. If supported by the browser, @keyframe rules are used to animate the spinner.