How to open I3F files

Did your computer fail to open an I3F file? We explain what I3F files are and recommend software that we know can open or convert your files.

What is an I3F file?

I3F files are I3 Fax file files, which you can read more about below.

The I3F 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 an I3F opener may not be able to open all kinds of I3F files. In this case, though, we only know of one specific use.

I3 Fax file

Through our analysis of I3F files, we know that one use of the format is I3 Fax file. 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!

I3F file openers, viewers, etc.

These apps are known to open certain types of I3F files. Remember, different programs may use I3F files for different purposes, so you may need to try out a few of them to be able to open your specific file.

We have not verified any programs that we know for certain can work with I3F-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 I3F-files. If you know one, please use the Suggest link below and tell us about it!