Crop and size your images using Pixlr.com, a free online alternative image editing program
The most common editor is Adobe Photoshop. However, if you don't have an image editor, we recommend Pixlr.com, a free online image editing tool that will allow you to create and crop images for the specialized areas of your website.
In the following videos, we show you how to get the dimensions of any image on your website in Chrome and Firefox, then use the free online image editor Pixlr.com to size and crop your images to the needed sizes before uploading them. The first video shows the details of actually uploading your images to your website slider. View the second video below for an abridged version of using the Pixlr editor to size/crop images.