From the course: Learning Responsive Media
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Compressing large images
In this video we'll discuss one of my favorite techniques, for delivering raster images, highly compressed JPEGs. One of the reasons I love this technique is it takes a common step we do is web builders with images, compressing JPEGs, to get them to be as small as possible and I turned it on its head. The first step of this technique is when we are working with images we want the largest image source we can get ahold of. My general rule of thumb is to grab the version of an image that's suitable for print. That usually means 150 PPI image, at least. PPI stands for pixel per inch. Having 150 PPI image means that you have 150 pixels in your image for every inch in size you want the image to be. So image at 600 pixels wide, at 150 ppi would be four inches wide. If you get your images from a stock photography site, for example, it's fairly easy to find these larger types of images. Next we take this image into Photoshop and we go to save for web, and compress the image to a quality of…
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