All about GFO Files

The GFO file type is primarily associated with SGI Radiosity.

GFO	File extension: GFO
	File type:	SGI Radiosity files

What is a GFO file?

GFO files mostly belong to SGI Radiosity. Use our "Online GFO Text Viewer" below to analyze your GFO file and to see all text it contains.

How to open GFO files

You need a suitable software like SGI Radiosity to open a GFO file. You need a suitable software like SGI Radiosity to open a GFO file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your GFO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a GFO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online GFO Text Viewer

Choose your .gfo file to analyze

or drag and drop it here

Online File Viewer

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Unable to Open a .GFO File? Quick Solutions:

GFO files can come from different programs and aren't universally openable.

Identify the Source: A 3D graphics workflow suggests an SGI Radiosity file. A linguistics or programming background often indicates a Grammatical Framework (GF) object.
Check the Header: Open the file in a text editor or hex viewer to inspect the first bytes:
- ASCII text like scope { implies an SGI Radiosity 3D model.
- Binary data usually implies a compiled Grammatical Framework file.
Use the Original Software: The original program is usually required. Try OpenGL Performer or Grammatical Framework tools. Since the extension is ambiguous, ask the sender if uncertain.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for GFO File Extension

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: gfoFile
EXEFile: %PFROOT%\Bin\perfly.exe

a gfo SGI Radiosity file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with GFO files

Associate the GFO file extension with the correct application.
Update your software that should actually open SGI Radiosity files. Because only the current version supports the latest GFO file format. Search, therefore, e.g. on the manufacturer website after an available SGI Radiosity update.
To make sure that your GFO file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .GFO file online - secure, fast, and no downloads needed.