The BSG format is associated with Fontasy Grafik, a graphics design software program which has been discontinued for a long time. Such files are no longer supported by their developer, so for opening them it is probably best to convert to a more popular format.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple BSG files as once.
JPEG JPG PNG GIF TIFF TIF BMP ICO EMF WMF AI PDF EPS PS EPI WEBP WEBPLL JP2 PCX TGA DWG DWF DXF DGN WMZ CGM DRW SHP GBR PCT MIF PLT PCL SVG WPG CIN DCX DIS HRU MTV PRC RAD PIC RLA QRT SGI XBM XPM SWF CAL FAX FITS PSD PGM JXR BPG APNG DDS SVGZ CG4 FLIF AVIF QOI
Advanced users can convert BSG files via command-line interface in manual or automated mode. You are welcome to contact our technical support when you have any questions about reaConverter.