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SGI vs TIFF

SGI vs TIFF

A detailed comparison of SGI Image and TIFF Image — file size, quality, compatibility, and which format to choose for your workflow.

Convert SGI → TIFF Convert TIFF → SGI
SGI

SGI Image

Raster & Vector Images

SGI (Silicon Graphics Image) is a raster image format developed by Silicon Graphics for use on their IRIX workstations. It supports both uncompressed and RLE-compressed storage with up to 4 channels including alpha.

About SGI files
TIFF

TIFF Image

Raster & Vector Images

TIFF is a flexible, high-quality image format widely used in publishing, printing, and professional photography. It supports multiple compression methods and color spaces including CMYK.

About TIFF files

Strengths Comparison

SGI Strengths

  • Historic VFX pipeline format.
  • 16-bit channel support.
  • RLE compression.
  • ImageMagick compatibility.

TIFF Strengths

  • Lossless by default — no generation loss on successive edits and saves.
  • Supports any bit depth (1 to 32 bits per channel), any color model, any number of channels.
  • Extensible tag system means vendor-specific data survives alongside standard tags.
  • Multi-page containers are perfect for scanned documents, faxes, and DICOM-like stacks.
  • Industry-standard for archival, museums, scientific imaging, and high-end print prepress.

Limitations

SGI Limitations

  • Legacy — SGI Inc. is gone.
  • Superseded by OpenEXR/DPX in film.
  • Niche tooling.

TIFF Limitations

  • File sizes are huge compared to JPEG/WebP/AVIF — often 10-30× larger.
  • Not a web format — no browser displays TIFF natively.
  • Ambiguous spec areas mean some TIFFs only open correctly in the tool that created them.
  • Weak animation support — designed for still imagery.

Technical Specifications

Specification SGI TIFF
MIME type image/x-sgi image/tiff
Extensions .sgi, .rgb, .rgba .tif, .tiff
Compression None or RLE —
Bit depth 8 or 16 bits per channel —
Standard — TIFF 6.0 (1992); BigTIFF extension for 64-bit offsets
Max file size — 4 GB (TIFF); 2^64 bytes (BigTIFF)
Compression options — None, LZW, Deflate, JPEG, CCITT G3/G4, PackBits, JBIG

Typical File Sizes

SGI

  • 1080p 8-bit SGI frame 4-8 MB
  • 4K 16-bit SGI 50-100 MB

TIFF

  • Scanned A4 page (300 dpi, B&W) 100-300 KB
  • Scanned A4 page (600 dpi, color) 15-40 MB
  • Print-quality magazine photo 30-150 MB
  • Satellite GeoTIFF tile 50 MB - 5 GB

Ready to convert?

Convert between SGI and TIFF online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.

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Frequently Asked Questions

SGI (SGI Image) is an image format used to store raster graphics — a two-dimensional grid of pixels describing a picture. It is part of the raster & vector images family and designed around a specific trade-off between file size, visual fidelity, and feature support (transparency, colour depth, compression type). Photographers, web designers, and content creators choose SGI when its particular strengths match the publishing target.

TIFF (Tagged Image File Format) is a flexible raster image format developed by Aldus Corporation in 1986. It supports lossless compression, multiple pages, layers, and high color depths, making it the standard for professional printing and scanning.

Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) open SGI natively. On mobile, iOS Photos and Google Photos display SGI in the gallery when supported by the OS. If the format is rare or new, convert to JPG or PNG first — both are universally readable — using our SGI to JPG or SGI to PNG converter.

TIFF files open in Adobe Photoshop, GIMP, Windows Photos, macOS Preview, and IrfanView. Multi-page TIFFs may require specialized viewers or Adobe Acrobat.

Upload the SGI to KaijuConverter and pick a target format (JPG, PNG, WebP, HEIC, TIFF, BMP, SVG, PDF). The conversion runs in the browser via ImageMagick and returns a download in seconds. No account or installation required; both input and output delete automatically within two hours.

It depends on the task. JPG is the smallest file size for photographs; PNG is lossless with transparency; SGI has its own niche that may favour colour depth, animation, or encoding efficiency over one or both of those. For the final web publish, test all three and measure file size plus visible quality on real content.