Display Images as Grayscale with CSS Filters
CSS filters aren't yet widely supported but they are indeed impressive and a modern need for web imagery. CSS filters allow you to modify the display of images in a variety of ways, one of those ways being displaying images as grayscale.
Doing so requires the most minimal of CSS:
You can even animate an image to or from grayscale:
CSS filters allow much more than just grayscale adjustments, so if you haven't taken the time, please play around with my CSS filter sandbox. Remember that if the user chooses to download the image, it is downloaded in its original colored displays, but for online display purposes, CSS filters do the trick!
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