Since the advent of the World Wide Web, the visualization of photographs and graphic imagery over the Internet was always one of the major reasons for its creation. Instead of being limited to printed literature, academic researchers could now share, immediately, their visual data along with their analytical material.

Graphics File Formats: What are they?
What are the best formats for photographs, charts, cartoon, etc?

Basic Facts on Scanners
Scanners copy the image of a document -- such as a photograph, or a newspaper article -- and create a digital version of that document so that it can be read by a computer.

Beginners Guide to Digital Cameras
Explanations about images, digital camera types, how to choose a digital camera, many links to other related topics.

Online Articles

Resolution Explained: Megapixels 101
Megapixels, resolution, DPI and PPI, and a summary of principles.

Demystifying Digital Camera Resolution
About pixels and resolution from those "Dummies" at Wiley.com.

What is Digital Image Resolution?
A quickie primer on pixels, image size, resampling and resizing.

Understanding Resolution and Resampling
More on resampling and resizing with Adobe Photoshop.

Resolution
Short, dense article on megapixels, DPI, JPEG compression, and file sizes

Scanning Basics 101
A personal site that offers good information about scanning basics.

Graphics Glossary
If you don't understand the graphics-related jargon you see, this is a glossary for definitions of common graphics terms.

Before You Buy Photo Editing Software
Many software programs are available for enhancing and otherwise working with images, but unless they can perform certain tasks, they should only be considered as companion tools to your primary photo editing application. This site will explain what you should know before you spend a little or a lot of money on image editing software.