Media

GIF Speed Changer

Speed up or slow down animated GIFs directly in your browser. Fine-tune playback speed from 0.1× to 5.0× with zero server uploads and 100% client-side privacy.

Processed on your device · nothing uploaded
Original GIF No GIF loaded
Drop GIF here or click to browse
Supports animated GIF files up to 50MB
Original Animated GIF Preview
0 Frames 0 × 0 px 0.0s Duration 1.0× Native
Speed Adjusted Preview Awaiting Input

Adjusted speed GIF will appear here

Adjusted Animated GIF Preview
— — — 2.0× Speed
Playback Speed & Optimization Settings (2.0× Speed • Original Dims • Balanced)
1. Playback Speed Multiplier
Select Speed Multiplier
2. Dimensions & Quality
Resolution / Scale
Color Sampling Quality
Quick Tutorial

How to Change GIF Playback Speed

1

Upload Animated GIF

Drop your animated GIF into the upload zone or browse from your device. Frames and native durations are extracted instantly in your browser.

2

Select Speed Multiplier

Choose a speed preset (e.g. 0.25× or 0.5× for slow motion, 2.0× or 4.0× for fast-forward) to instantly re-time playback.

3

Process & Download

Click Change Speed to compile the re-timed GIF with multi-worker acceleration in browser memory. Preview live, copy, or download instantly.

FAQ

GIF Speed Changer — Frequently Asked Questions

Is my GIF uploaded anywhere?

No. The GIF is decoded with your browser's built-in ImageDecoder (or a small JavaScript decoder on older browsers), the frame delays are rescaled, and the result is re-encoded locally in web workers. Nothing leaves your device.

Why isn't 10× or 0.1× available?

The GIF format stores frame delays in hundredths of a second and most browsers clamp anything under 0.02 s to 0.1 s. Beyond about 4× the frames can't get any shorter, so the animation stops speeding up — the presets stay within the range that actually works everywhere.

Why did the file get bigger after a slow-down?

Slowing down doesn't add frames — the file size shouldn't change much. But re-encoding always rebuilds the colour palette, so a GIF that was heavily optimised by its original author may grow a little. Pick '480px Max' or '320px Compact' to shrink it.

What does Color Sampling Quality change?

How many pixels the encoder samples when building the 256-colour palette. 'High Quality' checks every pixel (slowest, best gradients); 'Fast' samples one in ten (quick, slight banding). 'Balanced' suits most GIFs.

How large a GIF can I process?

Up to about 50 MB. Every frame is held in memory as raw pixels, so a 500-frame 800 px GIF needs roughly 1 GB of RAM — phones may run out. Resize to 480 px if processing stalls.

Will the GIF still loop?

Yes. The output is written with an infinite loop flag regardless of the original's loop count.