GIF Speed Changer & Reverser
Retiming a GIF is more than changing a delay field — browsers clamp very short delays. QuickGIF rescales every frame delay, drops frames when physics demands it (delays under 20 ms), and can mirror the animation into a seamless ping-pong loop.
How to use
- 1
Drop in your GIF / WebP / APNG.
- 2
Set speed between 0.25× and 4× with the slider.
- 3
Check Reverse to play backward, or Ping-pong for a seamless loop.
- 4
Process and download the retimed animation.
Platform limits reference
| Platform | Limit | Note |
|---|---|---|
| Min frame delay | 20 ms (50 fps) | Browser/renderer floor |
| Speed range | 0.25× – 4× | Frames dropped beyond that |
| Ping-pong size | ≈ 2× frames | Estimate shown in the panel |
| GIF delay units | 10 ms ticks | Delays quantize to centiseconds |
Frequently asked questions
›Why can't I go faster than 4×?
GIF delays are centisecond ticks and renderers floor at ~20 ms per frame (50 fps). Beyond 4× on typical sources we'd have to drop more than half the frames — at that point, use frame skip explicitly.
›Does slowing down add frames?
No — it lengthens each frame's delay. Motion gets slower but not smoother; the frame count is unchanged.
›What does 'drop frames if needed' mean?
If scaling pushes delays under the 20 ms floor, we keep every Nth frame and fold the dropped time into each kept frame — so total duration stays correct.
›Reverse vs ping-pong?
Reverse plays the animation strictly backward. Ping-pong plays forward then backward in one continuous loop — ideal for explosions, waves or AI motion that has no clean loop point.
›Will reversing mess up the first/last frame?
No. Ping-pong deliberately excludes the duplicated end frames so there is no doubled 'pause' at the turnaround points.