How do I compress GIF files?

Run "npx optimo animation.gif" to compress GIF with lossless optimization. For stronger compression, add --lossy. For size reduction through resizing, add --resize followed by a percentage, dimensions, or target file size.

What is the best way to reduce GIF file size?

The two biggest levers are resizing (reducing dimensions to match display size) and lossy compression. Resizing usually has a larger impact than codec-level compression. Sometimes converting to a more efficient format is the best approach.

Compress GIF files

GIF compression has hard limits. The best “compression” is usually converting GIF to MP4/WebM for much smaller files.

Last updated: 2026-03-18

To compress GIF files, run npx optimo animation.gif. Optimo applies ImageMagick-powered compression by default. For stronger reduction, use --lossy or --resize to shrink dimensions — often the single biggest lever for file size.

Start with optimo

First, run optimo on your image file:

npx optimo animation.gif

This is safe: optimo keeps the original if the output isn't smaller.

Two big levers

1) Lossy mode

npx optimo animation.gif --lossy

2) Resize (dimensions)

npx optimo animation.gif --resize w1280

Practical tips

If it’s animated, convert to MP4/WebM for huge size savings.
If you must keep GIF (e.g. legacy constraints), keep it short and small.
Mute is typically fine for GIF-like content; optimo defaults to muted video.

Optimize GIF Resize GIF GIF format guide

Consider converting

Sometimes the best compression is picking a better delivery format.

GIF → PNG GIF → JPEG GIF → WebP GIF → AVIF GIF → HEIC GIF → JPEG XL

Popular conversions

Convert GIF to MP4 Convert GIF to WebM Convert PNG to GIF Convert JPEG to GIF Convert WebP to GIF Convert AVIF to GIF Convert HEIC to GIF Convert JPEG XL to GIF

Frequently asked questions

How do I compress GIF files?: Run "npx optimo animation.gif" to compress GIF with lossless optimization. For stronger compression, add --lossy. For size reduction through resizing, add --resize followed by a percentage, dimensions, or target file size.
What is the best way to reduce GIF file size?: The two biggest levers are resizing (reducing dimensions to match display size) and lossy compression. Resizing usually has a larger impact than codec-level compression. Sometimes converting to a more efficient format is the best approach.