GIF Compressor — Compress Animated GIFs Online Free

Compress animated GIFs entirely in your browser. No upload, no signup, no watermark.

Drop GIF files here, or

Animated GIF only · max 50 MB per file · decoded-memory budget ~400 MB

Compression settings

Simple slider Advanced Target size

Smaller file Better quality 70

Presets (best-effort byte targets):

Files

Honest limits

GIF allows max 256 colors per frame — gradients will band; dithering trades banding for grain + file size.
1-bit transparency only — no smooth alpha. Transparent GIFs may show slight edge changes after re-quantization.
No audio (GIF has none).
Target-size mode is best-effort (≤8 encodes, 30s time-box), not a guarantee.
Very large/long GIFs may be refused on the ~400MB decoded-memory budget — trim frames first (see Video Trimmer).
Discord's own byte limits change over time — the 256KB preset targets bytes, it does not promise Discord acceptance.

Privacy

Everything runs in this page: decode, transform, encode and ZIP are 100% local. This tool makes zero network requests — both libraries (gifuct-js 2.1.2, gifenc 1.0.3) are vendored in lib/. No telemetry, no analytics.