Speed up or slow down a GIF
Every frame of a GIF has its own display time. Changing the speed scales all of them: at 2× each frame is shown half as long, at 0.5× twice as long. This page starts at 2×; choose any speed from 0.25× to 4×.
- Upload the GIF (or an animated WebP or PNG).
- Pick the Speed.
- Click Apply and download the result.
How fast can a GIF go?
GIF stores frame times in steps of 10 milliseconds, and browsers don't honour the shortest ones: a frame of 0 or 10 ms is shown for 100 ms instead, which would make a "fast" GIF suddenly slow. The editor never writes a frame shorter than 20 ms. When your speed would need shorter frames, it drops some frames and gives their time to the frame shown, so the animation still plays at the speed you asked for; it just shows fewer frames. You get a note saying how many were dropped.
Times are rounded to GIF's 10 ms steps without the animation drifting: over the whole loop the total time stays right.
Slowing down
Slowing down keeps every frame. A 0.5× GIF shows each frame twice as long; very slow speeds make jerky motion more visible, because no frames are added between the existing ones.
Other changes at the same time
Speed combines with Play backwards, Boomerang, loop count, rotation, flips and colour effects. Saving as animated WebP or animated PNG works the same way; those formats store times in milliseconds.
More about what this tool reads and writes: GIF Editor and Effects.