Silicon Graphics Image

Writable

image

Silicon Graphics Image (SGI) or the RGB file format is the native raster graphics file format for Silicon Graphics workstations

Identify it

Extensions	`.sgi.bw.rgb.rgba`
MIME types	`image/x-sgi-bwimage/sgiimage/x-rgbimage/x-sgiimage/x-sgi-rgb`
Signatures	`01da` at byte 0 (File Formats Wiki)
PRONOM	`x-fmt/140`
Wikidata	`Q7514956`

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Open it

DevILOpen sourcereads and writes · GNU Lesser General Public License, version 2.1
GIMPOpen sourcereads and writes · GNU General Public License, version 3.0
ImageMagickOpen sourcereads and writes · ImageMagick License
ConverseenOpen sourcereads · GNU General Public License, version 3.0
imageioOpen sourcereads · 2-clause BSD License
OpenImageIOOpen sourcereads · BSD licenses
ACD FotoCanvas Litereads and writes
ACDSee 5reads and writes
GIMP 2.0.2reads and writes
Hijaak Digital Photo Studioreads and writes
PhotoEdit2writes
PowerCADDreads and writes
ABViewerreads
Adobe After Effectsreads · proprietary license
Adobe After Effects 5.0reads
Adobe After Effects 5.5reads
Axialis IconWorkshopreads
Form-Zreads
Image Alchemyreads
IrfanViewreads · freeware
MediaRich Serverreads
PaintShop Photo Pro X3reads
PhotoModelerreads · proprietary license

Convert it

To	With	Fidelity	Command and losses
Portable Network Graphics	ImageMagick	Lossless	`convert in.rgb out.png` Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick	Lossless	`convert in.rgb out.tif` Pixels kept; some metadata, colour profiles or layers may be dropped.
GIF 89a	ImageMagick	Lossy	`convert in.rgb out.gif` Reduced to 256 colours.
JPEG File Interchange Format 1.02	ImageMagick	Lossy	`convert in.rgb out.jpg` Lossy compression.
WebP	ImageMagick	Lossy	`convert in.rgb out.webp` Lossy compression.

Sources

From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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