Images fall into two categories: raster and vector. Raster images are made up of pixels. Vector graphics are defined by a set of mathematical vectors (eg lines and curves).

• Raster images
  • Come from cameras/scanners
  • Formats: JPG, PNG, GIF, etc
  • More pixels = larger file size
  • Look blurry if scaled
• Vector images
  • Created in software (illustrator)
  • Format: SVG
  • Scalable Vector Graphics
  • Look sharp at any size