SGI File Extension

Have a problem opening a .SGI file? We collect information about file formats and can explain what SGI files are. Additionally we recommend software suitable for opening or converting such files.

What is the .SGI file type?

The .sgi extension stands for the Silicon Graphics Image (SGI) file format and the associated .sgi file type. SGI is a general name for a series of bitmap image formats, addressing black-and-white, grayscale, and full-color images that were developed by Silicon Graphics, Inc. for their high-performance personal graphics workstations. Although formally SGI is a proprietary format family, its specification has been published.

The .sgi extension itself conventionally denotes high-color (24-bit) RGB images and can be used interchangeably with the .rgb extension. Image data inside SGI files are often compressed with the lossless RLE compression algorithm. Thus, an .sgi file is a color (RGB) bitmap image in the SGI format.

SGI image files (.sgi, .rgb, and others) are not as widely supported as other massively popular bitmap formats (GIF, JPEG, etc.), but they can be displayed, processed, and converted into a range of other formats with most multi-format image viewers and toolkits (e.g., ACDSee, ImageMagick). There are also a lot of CLI tools to handle .sgi images. Besides, SGI images often occur as textures.

Software to open or convert SGI files

You can open SGI files with the following programs: 

Popular Formats

Video Tutorials