This tutorial will take you through the process of removing image backgrounds step-by-step using the freely available gimp software. This tutorial assumes you are running the Windows version, but the concept applies equally to other versions of the gimp and other photo editing software such as Photoshop.
The assumption is that you have a basic understanding of how to use the gimp.
Using the GIMP it is an easy process to make seamless background images.
The background images on web pages are a good example of seamless images. They are generally small images which are tiled or displayed repeatedly by your web browser. This is very efficient mechanism as your web browser only downloads a single copy of the image.