General links

• La imagen digital.
• Banco de imágenes
• Digital photography: how it works and how to improve it.
• JPEG Cruncher
• PNG, JPEG, or GIF? How to Pick the Right File Extension [Infographic]

Tools

• Compressing pixels.
• Gimp tutorials
• Pixact.ly
• The 9 best browser-based photo editors available today
• Vector magic
• Vector paint

Games

• Enhance computer