Convert PRJ to JXL

To effortlessly convert your PRJ files to JXL with high quality, we recommend using a reliable tool like reaConverter.

reaConverter is an offline software program used to convert files between different file formats and perform image editing. With reaConverter you can easily convert PRJ files to JXL format.

1. Download and Install reaConverter

reaConverter is quick to download, install and launch. This standalone software is extremely efficient in managing a wide range of batch conversions. reaConverter is incredibly powerful and boasts an extensive variety of features.

Install reaConverter

2. Load your PRJ files

Start reaConverter and load all the .prj files you intend to convert into .jxl. The software supports multiple PRJ conversion and processes all files locally on your computer.

Select PRJs from a folder or by drag-and-dropping them directly into the reaConverter window.

3. Select JXL as output format

Pick the JXL as output format and choose the destination folder where you want to save new .jxl files.

4. Start PRJ to JXL conversion

Then simply press Convert button and your conversion will begin in no time!

Once the conversion is complete, you can find your JXL files in the destination folder you selected.

PRJ to JXL Converter

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

Download Free Trial

Do more with your files

Converting PRJ 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.

Conversion features

User Reviews

Average User Rating:
Last updated on June 10, 2025

"Switching to JXL format with reaConverter was effortless. The compression is incredible - my images look perfect at half the file size of JPEGs. The batch conversion works flawlessly, saving me storage space without sacrificing quality. JXL is clearly the future, and reaConverter makes adoption painless!"

Mark T.

Satisfied Customer

"reaConverter’s Watch Folders feature has transformed my workflow! I set it to automatically convert my images to JXL, and now every new file I add gets optimized instantly. JXL keeps my photos crisp at half the file size of JPEGs. Super easy setup, flawless results – a must for batch processing!"

Alex R.

Photographer

"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"

DeShawn M. Thompson

Happy User

"I'm really impressed with this software - it converts files between formats incredibly fast!"

Lin Zhang

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

Happy User

"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"

Logan B.

Satisfied Customer

PRJ to JXL Conversion: FAQ

Can reaConverter convert PRJ to JXL?

Yes! reaConverter instantly converts .prj to .jxl 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 PRJ to JXL online?

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

How can I turn PRJ files into JXL on my computer?

The best way to change PRJs to JXLs 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 PRJ to JXL.

How can I automate PRJ to JXL 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 PRJ files to JXL using the command prompt?

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

What else can I do with reaConverter?

Convert CAD formats Set picture bit depth Convert DICOM images Change picture size Convert RAW formats