The following pages help with images on the wiki:
The types of images we need on the wiki, how to take them, and how to upload.
The preferred methods and settings we use to record animations. GIF is pronounced with a hard "G".
Introduction to GIMP
A guide to GIMP, a free cross-platform image editor with brushes, layer capabilities, selection tools, masking, etc.
How to cut out the background and other unnecessary parts of an image, putting the focus on the subject.
An advanced guide to adding translucency (removing the background) to images with semi-transparent parts.
Introduction to Pixelmator
A guide to Pixelmator, a mac only alternative to GIMP.
Adding copyright tags to images on the wiki