Drag to zoom into any image.
This extension will let you resize any image (this includes animated gifs) by clicking the image and then drag to resize. This plugin is still in beta and may not work on some websites.
• Hold the left mouse button and drag toward the bottom-right to resize the image.
• Right-click to reset an image to its original size.
• Hold control (command on Mac) to disable the script.
• does not work on some big sites, facebook,twitter and others
• drag image without mouseout will remove the href value
Reddit Enhancement Suite (RES)
• The image resizing code was extracted from RES, a GPL Greasemonkey script.