Artisan JS is a JavaScript library that aims to make in-browser drawing very easy. Artisan has the ability to layer things on the Canvas. Once rendered to the Canvas, those layers are flattened as you would expect, but the data stays intact.

Layers are much like what you would use in Photoshop. A stack is simply something to hold your layers as a collection. At any time, you can add shapes to a layer and then render the layers of a stack individually. So, imagine you have created a multi-layered bar graph. You could have a link to the right side of the Canvas that re-renders the Canvas with only a certain layer showing. Or, you could render the same data to multiple canvas elements at the same time with subtle variations.

Requirements: Canvas supported browser
Website: http://www.artisanjs.com/
License: GPL, MIT

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