Is GIF Speed Changer free?
Yes. GIF Speed Changer is free to use and runs entirely in your browser with no account needed.
Does this keep the GIF animated?
Yes. The tool changes playback timing and exports another animated GIF, so motion is preserved.
Does this upload the GIF to a server?
No. Timing changes run locally in your browser, so the GIF never leaves your device.
Can I set a custom speed?
Yes. Besides preset multipliers, you can enter a custom value to speed up or slow down the GIF by the exact amount you want.
Does it work on mobile?
Yes. Because it runs in the browser, you can change a GIF's speed on a phone or tablet as well as a desktop.
How do I speed up a GIF?
Open the GIF, pick a speed preset such as 1.5x or 2x, or type a custom multiplier, and export. The frame delays are recalculated in your browser and every frame is kept, so the animation stays smooth.
How do I slow down a GIF?
Choose 0.75x or 0.5x. Each frame is simply held on screen for longer, so nothing is dropped and nothing gets choppy. The file size barely changes, because the same frames are still there.
Why does my GIF stop getting faster?
Because there is a floor of 20 milliseconds per frame, which is 50 frames per second. Once the delays hit it, raising the multiplier further has nothing left to shorten.
Does changing the speed change the file size?
Barely. The frames are unchanged and only their timing is rewritten. If you want it faster and smaller, change the speed here and then cap the frame rate in the GIF Optimizer, which is what actually removes frames.
Will the GIF still loop at the new speed?
Yes. The loop setting is read from the source and written back out, so an animation that looped forever still does, just at the new pace.