Image Editing Photoshop The standard for professional image editing. The GIMP A powerful open source image editing program. Efficency GIF vs. JPEG A comparision of the different used for the GIF and JPEG image formats. Image Formats Graphics Interchange Format A description of the GIF image format. Image File Formats A quick overview of the most common image formats on the web. JPEG Images Answers to many frequently ask questions about the JPEG image format. PNG Homepage The homepage for the PNG (Portable Network Graphics) image format.