MMDT1021 Chapter 5 Notes - page 1

 

  JPEG - Joint Photographic Expert Group
.jpg
GIF - Graphics Interchange Format
.gif
PNG -Portable Network Graphics
.png
Color Depth Up to 24 bit color (16.7 million colors) Up to 8 bit color (256 colors) Up to 24 bit color (16.7 million colors)
Compression Type Lossy - clarity degrades Not lossy Not lossy
Transparency Not supported Supported Supported
Animation No Yes No
Best used with: Color photographs or graphics that have many hues. Line art, cartoon art, graphics with a small number of colors. Line art and graphics with a small number of colors generates small file sizes.

Color photographs tend to generate large file sizes.

Other:   LZW compression algorithm used to encode/decode a gif image is owned by Unisys Browser support is getting better.  Now supported in most modern browsers.