Linux Manuals · Linux Manuals session 1 qrttoppm (1) Linux Manual Page ByLinux Manual Posted onApr 20, 2026 qrttoppm – convert output from the QRT ray tracer into a portable pixmap Synopsisqrttoppm [qrtfile] DescriptionReads a QRT file as input. Produces a portable pixmap as output. See Alsoppm(5) AuthorCopyright (C) 1989 by Jef Poskanzer.