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Add images in animation order.
Use 0 to keep the original width.
Optimize one existing animated GIF by reducing its dimensions, frame density, or color palette. Each setting trades file size against motion smoothness or visual detail, so the smallest result is not always the best-looking result.
Start with one change at a time and inspect the generated preview. Leaving width at 0 and choosing Keep original timing preserves those source settings while still allowing palette, dithering, and loop changes.
Reducing pixel width and frame rate often produces the largest savings because fewer pixels and frames must be stored. Lowering the color count can reduce size further, but the best combination depends on the animation.
Start with 128 colors. Flat graphics and simple screen recordings may look good with fewer colors, while photos and gradients may need more. Use the preview to check banding and lost detail.
Dithering mixes palette colors into patterns to make gradients look smoother. It can also add visible grain or reduce compression efficiency. None is often suitable for flat graphics with clean color areas.
Keep original timing preserves the source frame delays. Choosing a fixed frame rate samples the animation at regular intervals, which may add or remove frames and change how smooth the motion looks.
The optimizer keeps a transparent palette entry when the source uses transparency, but resizing, color reduction, and dithering can change the appearance of transparent edges. Check the preview before downloading.
Related tools: GIF Maker · Image Resizer