Editing Images in CSS: Filters [↗]
Consider a situation where you have to have high-contrast, blurred or brighter versions of particular images on your website. Prior to CSS filters, your only options were either to upload different versions of these images or manipulate the images with JavaScript.
Unless you want to manipulate the pixels in the original image, CSS filters provide an easy way out. Let’s begin this tutorial with a brief discussion of all available filters.
A nice guide to using CSS filters on images. See demo for testing browser compatibility.