Animated GIF
1987, CompuServe introduces GIF; 1989, GIF89a adds animation controls.

Prompt
Apply an Animated GIF aesthetic as a single representative frame, using a limited palette of no more than 256 colors, hard pixel edges, flat color areas, and speckled dithering. Suggest stepped looping movement with a few tightly spaced motion echoes around active details. Keep the original subject and composition.
Identify
A short sequence repeats, often with stepped motion, hard pixel edges, and a limited palette. Flat colors or speckled shading are common.
Principle
A player displays stored image frames in sequence, using timing instructions to create apparent motion. Each frame uses a color table1 of at most 256 entries; a looping extension2 requests repetition.
Example
Chris Torres: Nyan Cat, 2011.
Try it out
Open a looping GIF in a frame viewer. Compare adjacent frames, then check whether they have equal display times.
Background
CompuServe introduced GIF in 1987 for exchanging color images across computer systems. The original format could hold multiple images. GIF89a followed in 1989, adding controls for frame delays, transparency3, and how previous frames are retained or cleared. Continuous looping came through a later Netscape application extension, not the original GIF89a specification alone. Each image can have its own color table, so an animation can contain more than 256 colors overall. Small files and broad browser support helped animated GIFs spread through early websites, then online jokes and reaction images.
Distinction
Unlike a static GIF, an animated GIF changes its displayed image over time. Unlike most web video formats, GIF has no standard audio track.
Aftermath
Animated GIFs show how carefully chosen frames and timing can make restricted color and simple repetition expressive.
Further examples · 7 images






Question
Must an entire animated GIF contain no more than 256 colors?
Show possible answer +Hide answer −
No. Each frame can use a different color table, allowing more than 256 colors across the animation.