EF3 Converter

Try our offline EF3 file converter. Every year thousands of users around the world save thousands of hours using reaConverter!

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EF3 Files
Online

How to Convert .ef3 Files in Bulk

1. Install reaConverter

Download reliable EF3 conversion software to convert multiple .ef3 files and folders in one go.
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Install reaConverter

2. Select EF3 Files

Select EF3s from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load EF3 files

3. Start Conversion

Click Convert to start the bulk conversion of all selected EF3 files. The process will begin right away.
reaConverter - Start EF3 conversion

Convert EF3 on your PC

For quick and effortless EF3 file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your files

Converting EF3 files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on September 01, 2025
"Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!"
Ben H.
Ben H.
Overwhelmed Office Hero
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
Lin Zhang
Happy User
"After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need."
Walter Morgan
Walter Morgan
Satisfied Customer
"An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time."
Roger Cook
Roger Cook
Happy User
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User

EF3 files: Frequently Asked Questions

What are EF3 files?

EF3 is a format associated with fax machines manufactured by Everex under the Everfax brand, which was fairly popular in the late 1980s. EF3 files contain images of sent and received documents and might be difficult to open using regular image viewers. Everex was well known as a manufacturer of tape drives, graphic boards, DTP products and other computer devices throughout the 1980s, but its success decreased in time. After filing for bankruptcy, the company was acquired by New Market Technology in 2008 and now continues to produce desktop computers and notebooks.

Can reaConverter open EF3 files?

reaConverter fully supports the EF3 file format – open, edit, and export EF3 files to any other popular file format with ease.

How do I change EF3 to another format?

reaConverter is a user-friendly tool for converting EF3 files. Once installed on your computer, it allows you to convert all your .ef3 files at once with just a few clicks. You can even convert ef3 images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert EF3 online?

If you only want to convert a few EF3 files, you are welcome to try our free online EF3 converter.

How can I turn EF3 files on my computer to another format?

The best way to convert EF3 files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from EF3.

How can I automate EF3 files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert EF3 files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line ef3 converter.

What else can I do with reaConverter?

Change file dateConvert GIS filesConvert DICOM imagesPicture resizerCopy IPTC data

What formats can I convert a EF3 file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

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Explore our efficient EF3 file converter that saves you time and effort by converting multiple .ef3 files into different formats.
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