Here’s a quick and easy way to resize those images. Why would you want to do this? Well sometimes, certain sites require a specific size. This is one of those things that is handy to know, when you need to know them. One of those moments happened to me when I wanted to upload an ibook to the iTunes Bookstore and screenshots had to be a correct size.
1. Open up the image using Preview.
2. On the top menu, titled “tools” click on “adjust size”
3. Specify the exact size you want. You may want to uncheck the box titled, “scale proportionally” as this can sometimes change from the proportions you want.
4. Save and presto, done!
