Compress GIF Under 1 MB

Pre-configured to hit 1 MB. Good quality achievable for short GIFs at 400 px wide with 128 colors.

Compatible Platforms

GIFs under 1 MB work well on these platforms:

Slack shows GIFs inline up to 1 MB — anything larger becomes a download link. Use 950 KB as your target to leave a safe margin.
At 400 px wide with 64–128 colors, most 2–5 second GIFs compress comfortably to under 1 MB.
Trim the GIF to 3–5 seconds to stay under 1 MB without heavy quality loss.

Why is 1 MB an important GIF size target?

Slack displays GIFs inline only when they are under 1 MB. Larger files appear as download links.

How can I compress a GIF to under 1 MB?

Use GifMash's Target Size tool, enter 1024 KB, and the compressor will automatically find the best quality/size balance.