RS is part of a group of formats called Sun Raster Images, developed by Sun Microsystems for use on its UNIX platforms. Similar formats include RAST, RAS and SUN. Files with the RS extension contain bitmaps that were created or processed on workstations or servers developed by Sun Microsystems. They are considered rare and are probably difficult to open via regular image viewers.
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 GBR PCT MIF PLT PCL SVG WPG CIN DCX DIS HRU MTV PRC RAD PIC RLA QRT SGI XBM XPM SWF CAL FITS PSD JXR BPG APNG DDS SVGZ CG4 FLIF