Tip: Screenshots Should Not Be JPEGs
I’m amazed at the number of web sites that are selling software (web- or desktop-based) where the screenshots are JPEGs (this rant is courtesy of an interesting requirements gathering product at http://www.gatherspace.com). Screenshots of the software in action are a great way to demonstrate various features and can work as a summary of the features, with the details left for a Flash-based demo. However, when the screenshots are converted to JPEGs, by definition you lose quality (that’s why JPEG is called "lossy"). Viewing screenshots as blurry JPEGs gives a bad impression. PNGs are widely supported these days and the PNG format is lossless, meaning that it still compresses the file, but doesn’t change one pixel from the original.
