Why would you want to re-size images? Well, there are a number of reasons, but primarily it’s a good idea to re-size images that you have uploaded straight from your camera because newer cameras (even point-and-shoot) are, by default, set to be for printing, so the files are usually too large for the web.

For internet browsing, images should be
800px on the longest side and at 72ppi.

There are times you’ll want it larger, but use this as a rule of thumb. Computer monitors don’t need as many pixels as printers do, so it’s a really good idea to optimize your images for the web to ensure quick download speeds. Remember that your users have to download a copy of your image to their computer in order to see it, so if you have a 3mb image, that could mean anywhere between 30s to 5 minutes of download time, depending on the user’s connection. Even 30s is too long. So you want to get your images to be under 500kb (1/2 a MB) or less if possible.  I usually aim for images to be between 75kb > 150kb. Typically, that’s plenty of pixel information for the web. Continue reading…

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