File Extension Library

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.GM4 File Extension

  • Developer by: Pierre-Emmanuel Gougelet
  • Category: Bitmap image Files

What are .GM4 files and how to open them?

Can't open .GM4 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 .GM4 file.

What is a .GM4 file extension?

.GM4 file extension is created by Pierre-Emmanuel Gougelet. .GM4 has been classified as Bitmap image Files.

.GM4 is Autologic bitmap image

The gm4 file extension was also used autologic bitmap image format.

The gm4 file stores bitmap image. (mode 4 gray-scale).

Seems to be obsolete bitmap picture file format without support from developer.


How to open:

Use XnView to view content of *.gm4 files.

How to convert:

XnView is able to export *.gm4 files to other formats.

How to fix problems with .GM4 files

  1. You need to update the application that you normally use to open .GM4 files. Only the latest version of the software supports the current .GM4 file format
  2. You need to check the .GM4 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)
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