How to open G3 files

Did your computer fail to open a G3 file? We explain what G3 files are and recommend software that we know can open or convert your files.

What is a G3 file?

G3 files are raw Group 3 FAX bitmap files, which you can read more about below.

The G3 file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So a G3 opener may not be able to open all kinds of G3 files. In this case, though, we only know of one specific use.

raw Group 3 FAX bitmap

Through our analysis of G3 files, we know that one use of the format is raw Group 3 FAX bitmap. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

We have not verified any programs yet that works with this specific format. If you know any, please use the 'Suggest a program' link below. Thanks!

G3 file openers, viewers, etc.

These apps are known to open certain types of G3 files. Remember, different programs may use G3 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

IrfanViewIrfanViewUser submitted
GIMPGIMPUser submitted
Altium DesignerAltium DesignerUser submitted
ImageMagickImageMagickUser submitted
MysticThumbsMysticThumbsUser submitted
Altium Designer SummerAltium Designer SummerUser submitted
Altium Designer Summer ViewerAltium Designer Summer ViewerUser submitted
Altium Designer WinterAltium Designer WinterUser submitted
Protel DXPProtel DXPUser submitted
3D Photo Browser3D Photo BrowserUser submitted
We have not verified any programs that we know for certain can work with G3-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with G3-files. If you know one, please use the Suggest link below and tell us about it!