Convert rfg to gif Online: rfg2gif

You can use Tom's Editor to easily convert images from
LEGO Mindstorms EV3 Robot Graphics File .RFG to CompuServe Graphics Interchange Format .GIF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

RFG

LEGO Mindstorms EV3 Robot Graphics File is an image format with extension RFG.

GIF

GIF images were created by Compuserve. They can used no more than 256 colors and a single color transparenty (no Alpha channel). Today are rare since they offer low quality and huge filesizes. GIF animations are still in use.