Cant get Image Converter to work ? What do the transparency options mean ?

Success ! Thanks everyone for your help.

    // image converter https://www.espruino.com/Image+Converter ; settings to get a fillable image
    // 1 bit bw, transparency? Y, transparent bg, white heart (must be white for color fill)
    g.drawImage(atob("FBSBAAAAAAAAAAAB+fg//8f//n//5//+f//n//5//+P//D//wf/4D/8Af+AB+AAPAABgAAAA"), 1+this.x, 1+this.y);