GIF image format

Pros
  • Universally supported for animation.
Cons
  • Only 256 colors per image, leads to blocky look.
  • (a modern variant supports 256 colors per frame, but GIMP doesn’t use it).
  • Supports transparency but only as fully transparent/fully opaque.
Recommended uses
  • Small animated images.
  • (in all other still-image uses PNG is a better alternative, and for bigger animation modern HTML supports video)

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