EFax
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Latest revision as of 01:33, 25 August 2020
eFax is an internet fax software owned by J2 Global[1]. J2 Global was founded in 1995 as JFAX.com. eFax Messenger is software which can send and receive image files in the proprietary .EFX file format.[2]
Contents |
[edit] File Identification
J2 Global's original JFAX service used a file format based on the TIFF-F format with a .JFX extension. Also known as J2 Messenger[3].
Version 3 & 4 of the .EFX file format is proprietary and begins with hex values DCFE then 2 bytes of unknown values then 6 bytes 00000000FFFF.
Version 5 is unknown.
[edit] Screenshots
