DBL file size is doubled on unix compared to windows using ming's png2dbl

programming
1

When I use ming’s png2dbl to do the png to dbl conversion, a 250K PNG on windows goes down to about a 50K SWF. However, on Unix, the PNG goes up to about 400K when converted. Does anyone know how to reduce the size of the dbl so that when it does the conversion the swf file size is smaller?

thanks