View Images Bigger Than The Viewport Easily: PanoJS3
Sometimes, we need to display images that are bigger than the viewport or we have a limited space.
It is a very useful widget specially for displaying panoramic images, maps or huge documents.
Besides the desktop, it also works on mobile browsers with touch interfaces (supports pinch to zoom and pan gestures).
A simple map helps finding out the which part of the image is being viewed and it is possible to enable fullscreen mode with a click.