FAX File

What are FAX files and how to open them

Are you having problems opening a FAX file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your FAX files.

What is a FAX file?

FAX files have multiple uses, and FAX Document is one of them. Read more about the other uses further down the page.

FAX Document

Files that contain the .fax file extension are most commonly associated with digital fax files. Users had to use actual fax machine devices to send and receive faxes in the past. With newer Internet technology, users can now send faxes using their computers and an Internet connection.

When a user receives digital fax, the fax file is saved to the user's hard drive with the .fax file extension. Some faxing applications will also keep copies of a user's sent faxes with the .fax file suffix.

The FAX file format conforms to the ITU-T recommendations T.30 and T.4. FAX files are usually saved in TIFF format. When the file is opened, the user can see the actual fax image sent to them via the digital FAX software.

How to open FAX files

We have identified one FAX opener that is compatible with this specific type of FAX file.

Programs that open FAX Document files

Last updated: January 22, 2025

All known file formats using extension .FAX

While FAX Document is a popular type of FAX-file, we know of 5 different uses of the .FAX file extension. Different software may use files with the same extension for different types of data.

Amiga GPFax FAX

We know that one FAX format is Amiga GPFax FAX. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

While we have not verified the apps ourselves yet, our users have suggested ten different FAX openers which you will find listed below.

Amiga MultiFax FAX

We know that one FAX format is Amiga MultiFax FAX. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Amiga TrapFAX FAX

We know that one FAX format is Amiga TrapFAX FAX. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Zyxel FAX Format

We know that one FAX format is Zyxel FAX Format. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

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

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about FAX file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.