How to reduce GIF size for an upload limit

Start with the limit and the scene

Find the destination’s file-size budget before editing. A GIF with a detailed moving background needs more information than a small animation with a few flat colors. A target of 256 KB is a constraint, not a guarantee that every scene can fit. Keep the original so you can compare each attempt.

Reduce the canvas before the palette

Choose a size that matches where the GIF will be displayed. Halving both width and height leaves one quarter of the canvas pixels; this is not a promise of a fourfold file-size reduction because animation content and compression also matter. Try 128 or 64 colors next, and look for banding in gradients or damage to text.

Decide whether to change timing

Leave Resample frames off to preserve the source frame schedule. Enable it when you deliberately want a new FPS. Lower frame rates can make motion less smooth. Trim an unneeded pause or shorten the scene before making the subject too small to recognize.

Check the measured result

In GIF Compressor, enter the limit in Maximum output KB and export. Inspect the animation, transparent edges and reported byte count. If the target is infeasible, the tool withholds the download and asks for a smaller canvas, shorter range or fewer colors. Do not rename another format to .gif to bypass a limit.

When to use a different format

GIF has no sound and uses a limited palette. For longer motion with audio, keep a video if the destination accepts it. Use Video to GIF only when you specifically need a GIF, or GIF Resizer & Speed Editor when the primary task is a new canvas or playback pace.

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