Konva – a better zoom-at-a-point demo – Coding for the long view
Create html5 canvas pinch zoom by Krishnasagar_cl | Fiverr
21 Zoom Javascript Libraries For Web & Mobile – Bashooka
Canvas Based Image Viewer In JavaScript - viewer.js | CSS Script
Infinite HTML canvas with zoom and pan | Sandro Maglione
Zooming in and out of your canvas (with or without shortcuts) - YouTube
GitHub - akademy/CanvasZoom: Zooming of very large images with the Javascript, html5 and the canvas element. (Similar in functionality to Zoomify, OpenZoom or DeepZoom)
GitHub - licaomeng/canvas-zoom: An indoor map sample based on HTML5 canvas, you can zoom in and zoom out the map with your fingers
javascript - zoom into html canvas - Stack Overflow