File Extension Library

.IGR File Extension

  • Developer by: NoteHeads
  • Category: Audio Files

What are .IGR files and how to open them?

Can't open .IGR file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .IGR file.

What is a .IGR file extension?

.IGR file extension is created by NoteHeads. .IGR has been classified as Audio Files.

.IGR is Igor Engraver File

Musical notation file created by Igor Engraver, a program used for making musical charts; saves musicians, instruments, and the musical score itself; used for saving compositions; can be played back in the software.

IGR files can be used by both the Windows and Mac versions of Igor Engraver. However, when saving files on Mac, the file may not have an extension. Therefore, to use the file in Windows, add the ".igr" extension.

NOTE: The Mac version of Igor Engraver is only available for Mac OS Classic.

List of all softwares that can open the Igor Engraver File
NoteHeads Igor Engraver
NoteHeads Igor Engraver
File Type 2:

Quest3D Channel Group Layout File

Developer by: Act-3D Category: Settings Files Format: Binary

File created by Quest3D, a program that allows users to create 3D applications; contains the locations of "channels" within the Quest3D Channel Graph layout pane; used for storing the user-defined layout of a 3D scene.

IGR files are always saved with their corresponding .CGR files and have the same prefix filename. If IGR files are missing, the channels are displayed with a default layout and may be difficult to view.

Act-3D Quest3D is now discontinued.

How to fix problems with .IGR files

  1. You need to update the application that you normally use to open .IGR files. Only the latest version of the software supports the current .IGR file format
  2. You need to check the .IGR file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)