How to use Resize GIF
- Choose the source file or ordered images.
- Review animation-specific controls.
- Preview and download the measured result.
Resize GIF
Resize every frame of an animated GIF while preserving frame order, timing, and loop behavior.
Resize 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 |
| Animation | All frames, timing, order, and loop preserved |
| Reporting | Original, requested, and actual dimensions |
Five explicit resize modes
Choose width, height, longest side, percentage, or width and height. Only the active mode controls output, eliminating competing populated fields.
- Fit inside preserves the whole animation.
- Fill/crop preserves aspect ratio and crops overflow.
- Stretch is explicit and warns about distortion.
Questions, answered.
Does percentage work independently?
Yes. Selecting Percentage makes it the sole resize input.
Are frames dropped?
No.