JPEG vs GIF vs PNG

Slide 1: JPEG vs. GIF vs. PNG What’s the difference?

Slide 2: JPEG

Slide 3: JPEG • Stands for “Joint Photographics Expert Group“ • Used to compress photos and complex images • The information that is lost is mostly what humans can’t see

Slide 4: JPEG • Uses small squares of shaded colours called pixels • Not good for letters, drawings or simple graphics, as there is nothing to get rid of

Slide 5: GIF

Slide 6: GIF • “Graphics Interchange Format” • Doesn’t remove any quality when compressing • Multiple images can be combined to create simple GIF animations

Slide 7: GIF • Only good for simple graphics, as it only supports 256 colours • Can also be edited to be transparent, allowing background images/text to show through

Slide 8: Animated GIFs

Slide 9: PNG

Slide 10: PNG • “Portable Network Graphics” • Upgraded version of GIF, as it can be the same quality but 20-25% smaller • Doesn’t support animation

Slide 11: Summary • JPEG: used to compress complex images by creating coloured pixels, but reduces quality • GIF: used to compress simple images without loss of quality, but only supports 256 colours • PNG : upgraded version of GIF but doesn’t support animation