How to use Compress GIF
- Choose the source file or ordered images.
- Review animation-specific controls.
- Preview and download the measured result.
Compress GIF
Reduce animated GIF colors with explicitly labeled lossy controls while preserving animation.
Compress GIF uses a separate frame-aware pipeline; it never sends an animated file through the static first-frame canvas path.
How OpenFileTools processes it
Local processing, explicit choices.
The browser lazy-loads GIF decoding and encoding code, composites disposal-aware frames, applies the operation to every frame, and creates an animated GIF locally.
Quick technical summary
What this tool changes.
| Property | Behavior |
|---|---|
| Processing | Browser only; no image upload |
| Original | Never changed |
| Optimization | Lossy per-frame palette reduction |
| Frames and timing | Preserved |
Palette reduction, described honestly
This tool re-encodes every frame with up to 256, 128, or 64 colors. It does not silently resize the canvas, remove frames, or reduce frame rate.
- Fewer colors can create banding.
- Savings are measured after encoding.
- Keep the original when the output grows.
Questions, answered.
Is compression lossless?
No. Palette reduction can change colors.