Convert EFX to JP2

EFX to JP2 converter that respects your privacy. No cloud uploads, no file size limits — just fast offline batch processing.

Got a folder full of EFX files? reaConverter batch converts them to JP2 in minutes, not hours. Local processing means instant results, even with thousands of files.

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EFX to JP2
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How to Convert Multiple EFX Files to JP2?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting EFX files in under two minutes.

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Install reaConverter

2. Load your EFX files

Add your EFX files to reaConverter. Whether it's a handful or an entire archive, the batch engine processes them efficiently.

Browse for files, drag them in, or add entire folders at once. reaConverter queues everything automatically.

Load your EFX files into reaConverter

3. Select JP2 as output format

Pick JP2 as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

Select JP2 as output format

4. Start EFX to JP2 conversion

Start the conversion with one click. reaConverter handles everything and notifies you when it's done.

Start Conversion

When the batch finishes, your JP2 files are ready in the destination folder you chose earlier.

EFX to JP2 Converter

reaConverter offers the fastest, simplest solution for converting your EFX files into JP2 in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting EFX files for use in a workflow? 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.

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User Reviews

Average User Rating:
Last updated on January 15, 2026
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Brian White
Happy User
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Marcus White
Healthcare IT
"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
"For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results."
Jamal Bailey
Jamal Bailey
Satisfied Customer
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator

EFX to JP2 Conversion: FAQ

What are EFX files?

EFX is an image format associated with some models of Everex fax machines. The file most likely contains the digital copy of a fax document that has been sent or received. Everex was a large manufacturer of tape drives, disk drives, fax modems and other IT products in the late 1980s. After a period of financial problems, the company was relaunched in 2008 after being acquired by New Market Technology. At the moment it manufactures desktop computers and notebooks. Everex fax machines have long been discontinued, so opening an EFX file might pose difficulties.

What are JP2 files?

JP2 or JPEG 2000 is an improved version of JPEG, one of the most popular file formats for storing and transferring images. Compared to the latter, JP2 image files offer higher quality and smaller size images by using a different compression algorithm, which can be either lossy or lossless. JP2s are created using the JPEG2000 Core Coding application, but can also be obtained through conversion from other formats.

Can reaConverter convert EFX to JP2?

Yes! reaConverter instantly converts .efx to .jp2 with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert EFX to JP2 online?

If you only need to convert a few EFX files to JP2 format, feel free to try our free online free online EFX to JP2 converter — perfect for small batches with no installation needed!

How can I turn EFX files into JP2 on my computer?

The best way to change EFXs to JP2s on your PC is to install 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 EFX to JP2.

How can I automate EFX to JP2 files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert EFX files to JP2 using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line efx to jp2 converter for batch processing.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceChange file dateCopy IPTC dataConvert DICOM files

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