gif
graphic interchange file
image above is a gif with 256 color pallet (size: 6 kb)
posters, graphics
limit pallet and dither to make file smaller
using 16 color pallet
undithered
(size: 5kb)dithered
(size: 5kb)gif animation file
screenshot of how this is created
transparent background
here is the image with the transparent background set in red.
and here the same image with different backgrounds
jpeg
joint photographic experts group
useful for photos, gradients
sliding compression/quality
moderate compression
(size: 22kb)higher compression
(size: 9kb)compare with gif file (not recommended)
(size: 23kb)example of misuse of jpeg
high quality (i.e., little compression)
(size 29 kb)closeup
low quality (high compression)
(size: 5 kb)closeup
