.EFX File Overview

File Extension:	EFX
File Type Description:	eFax Document
File Type Developer:	j2 Global, Inc.
Primary Associated Software:	j2 Global Communications eFax
Primary Software Developer:	j2 Global, Inc.

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What is File Extension EFX?

The EFX file extension is a eFax Document file developed originally by Valve for Raven Software Star Wars Jedi Knight: Jedi Academy. User statistics infer that these EFX files are popular with users from United States and most frequently found on the Windows 10 platform. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.

Associated Developers and Software

	Raven Software Star Wars Jedi Knight: Jedi Academy by Valve
	j2 Global Communications eFax by j2 Global, Inc.
	Quake 3 Arena by id Software

Top EFX User Languages

Top EFX File User Browsers

Desktop Friendly?

Mobile Friendly?

Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Mac
	Linux
	Xbox One
	OS X El Capitan

Other File Types Related to EFX Files

Extension	File Type Developer	File Category	File Type Description
.JSD	Jazer Solutions	Data Files	Jazer Data File
.CBN	j2 Global, Inc.	Uncommon Files	PaperMaster Cabinet File
.001	Smith Micro Software	Backup Files	Split Archive File
.HOT	Electronic Arts	Audio Files	The Sims Audio File
.JFX	j2 Global, Inc.	Raster Image Files	J2 jConnect Fax File
.TET	RM Education	Data Files	Textease CT Template
.INSTALLER	Apple	Data Files	Golden Orchard Apple II CD Rom File
.CONTACT	Microsoft Corporation	Data Files	Windows Contact File
.MTW	Minitab Inc	Data Files	Minitab Worksheet File
.LP1	Apple	Data Files	Golden Orchard Apple II CD Rom File