How to Convert Multiple ERF Images to JXL?
1. Download and Install reaConverter
reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately. reaConverter also includes editing tools: resize, crop, rotate, and more.
2. Load your ERF files
Add ERF files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.
Drag-and-drop ERFs directly into reaConverter or use the folder browser to load entire directories.

3. Select JXL as output format
Select JXL as target format and pick where to save results. You can keep default settings or fine-tune the output.

4. Start ERF to JXL conversion
Press Convert to begin processing. You can watch the progress or minimize and let it run in the background.

Your converted JXL files will appear in the destination folder as soon as processing completes.







