How to Convert Multiple EXR Images to JP2?
1. Download and Install reaConverter
First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed. Need edits? Resize, rotate, or add watermarks during conversion.
2. Load your EXR files
Start reaConverter and add your .exr files. The software processes everything locally, so your files never leave your computer.
Use drag-and-drop, folder browser, or right-click conversion from Explorer.
3. Select JP2 as output format
Select JP2 from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.
4. Start EXR to JP2 conversion
Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.
Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your JP2 output.
How EXR and JP2 differ in practice
EXR carries 32 bits per channel and JP2 carries 16, so tonal steps get coarser during conversion. It shows up first in smooth gradients such as skies. If the result will be edited further, move to a 16-bit format only at the very end. EXR stores pixels without compression loss and JP2 does not, so this is a one-way step. Choose a high quality setting, and avoid converting the same file back and forth, because each pass compounds the artefacts.
