Sun Raster

Sun Raster was a raster graphics file format used on SunOS by Sun Microsystems.^[1] The format has no MIME type,^[2] it is specified in @(#)rasterfile.h 1.11 89/08/21 SMI. The format was used for some research papers.^[3][4]

Sun Raster
Filename extension	.ras, .sun
Internet media type	image/x-sun-raster
Magic number	59A66A95h
Developed by	Sun Microsystems
Latest release	1.11 21 August 1989; 35 years ago (1989-08-21)
Type of format	Image file formats

ACDSee, FFmpeg, GIMP, ImageMagick, IrfanView, LibreOffice, Netpbm, PaintShop Pro, PMView, and XnView among others support Sun Raster image files.^[5][6] In version 2.13 XnView supported the file extensions .ras and .sun for this graphics file format. In version 2.1.4 FFmpeg could encode and decode Sun Raster pixel formats bgr24, pal8, gray, and monow.^[7] The format does not support transparency.

The plain text Sun icon format specified in @(#)icon_load.h 10.5 89/09/05 SMI is unrelated to the Sun Raster format.^[8]