The table below provides some useful information about the .efx extension. It answers questions such as:
- What is the .efx file?
- What program do I need to open a .efx file?
- Where can I find the specifications for .efx?
- How can I convert .efx file to another format?
We hope you find this page helpful and a valuable resource.
Details of extension .efx
2 extension(s) and 0 alias(es) found in database.
Problems with .efx files?
First check your registry for hidden errors!
| Extension: | .efx |
|---|---|
| Type: | eFax Document |
| Category: | Document |
| Mime type: | image/efax |
| Description: | |
| EFX file is an eFax Document. eFax is a service of j2 Global Communications that allows users to receive and send fax documents in digital format (e.g., in email). | |
| [Detailed description] [Sample not yet available] | |
| Open with: | eFax Messenger |
| Program name: | |
| Related links: | |
| none | |
| Aliases: | |
| none | |
| Related extensions: | |
| apx, awd, can, fax, fpx, rsb, sep, tif, wfx | |
| Extension: | .efx |
|---|---|
| Type: | Everex Everfax Image |
| Category: | Graphic |
| Mime type: | application/octet-stream |
| Description: | |
| EFX file is an Everex Everfax Image. | |
| [Detailed description not yet available] [Sample not yet available] | |
| Open with: | XnView |
| Program name: | |
| Related links: | |
| none | |
| Aliases: | |
| ef3 | |
| Related extensions: | |
| adt, bfx, brt, can, cvp, f96, fax, fmf, ftf, g3f, g3n, gmf, lda, mh, mmr, ncr, oaz, ofx, ric, sff, uni, vfx, vif | |
Cannot open .efx files on your system?
When windows gives you an error message saying that it cannot open
.efx files, this means either:
- You need to identify a program that can open the file or
- Your registry may be damaged.
RECOMMENDED:
In both cases it is strongly recommended that you
run a free scan for registry errors.









