Convert IIMG to SGI

Convert IIMG to SGI without quality loss. reaConverter gives you full control over resolution, compression, and output settings.

Manual IIMG to SGI conversion wastes hours. reaConverter automates the process — just add files and click Convert. Everything happens offline on your computer — no uploads, no cloud risks.

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How to Convert Multiple IIMG Files to SGI?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting IIMG files in under two minutes.

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Install reaConverter

2. Load your IIMG files

Open reaConverter and add your IIMG files. You can load individual files, entire folders, or even nested subfolders.

Drop your IIMG files into the window or use File menu to browse and select folders.

Load your IIMG files into reaConverter

3. Select SGI as output format

Choose SGI as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select SGI as output format

4. Start IIMG to SGI conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your SGI files in the output folder. Click 'Show converted files' to open it directly.

IIMG to SGI Converter

reaConverter offers the fastest, simplest solution for converting your IIMG files into SGI in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting IIMG files for use in a workflow? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

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Image editing

User Reviews

Average User Rating:
Last updated on January 25, 2026
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
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"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Marcus White
Healthcare IT
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
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"Enable shell integration for lightning-fast file conversions directly from Windows Explorer."
R. Lewis
R. Lewis
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"After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need."
Walter Morgan
Walter Morgan
Satisfied Customer

IIMG to SGI Conversion: FAQ

What are IIMG files?

IIMG is a type of file also known as an "Interleaf image". Such files most likely contain images that were created and/or edited using software programs created by Interleaf, an American IT developer which produced graphics editing tools for the publishing industry throughout the 1980s and 1990s. The brand was acquired by Broadvision in 2000. The IIMG format is currently considered rare and obsolete.

What are SGI files?

SGI (Silicon Graphics Image) is a raster image format associated with Silicon Graphics workstations. It is a bitmap file that can store black-and-white, gray-scale and color images, and may also contain color maps and alpha channels. SGI files are sometimes referred to as RGBs and can either use no image compression or RLE compression. Alternative extensions for the SGI format are BW, RGB and RGBA.

Can reaConverter convert IIMG to SGI?

Yes! reaConverter instantly converts .iimg to .sgi with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert IIMG to SGI online?

If you only need to convert a few IIMG files to SGI format, feel free to try our free online free online IIMG to SGI converter — perfect for small batches with no installation needed!

How can I turn IIMG files into SGI on my computer?

The best way to change IIMGs to SGIs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from IIMG to SGI.

How can I automate IIMG to SGI files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert IIMG files to SGI using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line iimg to sgi converter for batch processing.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceConvert GIS filesChange format settingsChange image DPI

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