Canvas

Panzoom is a progressive plugin to create panning and zooming functionality for an element. Panzoom supports the same browsers as jQuery 2.0 and can be used with jQuery 1.9.0+ or jQuery 2.0+.   Rather than setting width and height on an image tag, Panzoom uses CSS transforms and matrix functions to take advantage of hardware/GPU acceleration in the browser, which means the element can be anything: an image, a video, an iframe, a canvas, text, WHATEVER. IE<=8 is not supported, but this plug

CamanJS is canvas manipulation in Javascript. It's a combination of a simple-to-use interface with advanced and efficient image/canvas editing techniques.   It is very easy to extend with new filters and plugins, and it comes with a wide array of image editing functionality, which continues to grow. It's completely library independent and works both in NodeJS and the browser.