Remove a background colour from a GIF or image

Make one colour transparent in an animated GIF or still image. Click the preview to pick the colour, then set tolerance and feathering for soft edges. Runs locally with ffmpeg.

source

Drop a file here

or choose one, paste one, or pick from history — nothing leaves your device

settings

Pick the colour to knock out, widen the tolerance until the whole background goes, and add a little feather so edges don't look cut with scissors. GIFs stay animated; stills come back as PNG.

colour to remove

Auto: the top-left pixel. Click the preview to pick another.

tolerance%

feather%

result

Pick a file to start.

filename

.gif

Saved as transparent.gif — a valid Slack emoji name.