Transparencies may not seem like much fun until you discover the exciting visual affects you can create using them. Grab a copy of the free GIMP image-editing program and you can learn to turn blue ...

The Gimp provides the Rectangle, Ellipse and Lasso selection tools to help you cut out specific parts of a photo or illustration to keep, eliminate or edit. In addition, if you add an Alpha channel to ...

This GIMP script will create a new layer on top of your current layer and highlight any pixels that are completely transparent with 0 alpha and 0 color. It will also highlight (in a different color) ...

A very useful skill in Photo manipulation is the ability to selectively alter an area. If you can selectively colour an area you can use the same technique to apply a whole range of effects to very ...