GIF Optimizer

Drop a GIF here

…or click to choose a file

Color count (2-256)

Loop count (0 = infinite)

Enable dithering

Helps preserve gradients; can add grain.

Flatten to background (optional)

Removes transparency using this color; often reduces size.

GIF Optimizer - Quick Cheat Sheet

Color count: 2-256. Fewer colors = smaller file, but more banding.
Dithering: hides banding by scattering error; slightly grainier but often looks better.
Flatten to background: replaces transparency with a solid color (e.g., #FFFFFF) and can reduce size.
Loop count: 0 = infinite loops; set a positive number to cap repeats.
Optimize layers: stores only pixel changes between frames (big savings on static scenes).
Tip: UI/screencaps often need 128-256 colors; memes can look fine at 64 with dithering.
Limit: Max upload here is 60 MB (adjust in code if needed).

Notes & edge cases

Processing uses PHP Imagick locally; there are no third-party requests.
Coalescing stabilizes animations with per-frame palettes or unusual disposal modes.
Haloing around transparent edges on colored pages? Try flattening to a matching background.