How to Convert Multiple DNG Images to AVIF?
1. Download and Install reaConverter
reaConverter is a standalone Windows app — download, install, and start converting DNG files in under two minutes. reaConverter also includes editing tools: resize, crop, rotate, and more.
2. Load your DNG files
Load your DNG files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.
Drop your DNG files into the window or use File menu to browse and select folders.

3. Select AVIF as output format
Select AVIF from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

4. Start DNG to AVIF conversion
Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

After conversion, find your AVIF files in the output folder. Click 'Show converted files' to open it directly.
How DNG and AVIF differ in practice
DNG files hold unprocessed sensor data, so white balance and exposure are still adjustable. Converting to AVIF bakes those decisions into the pixels, and highlight recovery is no longer available afterwards. Set white balance and exposure before the run rather than after. DNG carries 14 bits per channel and AVIF carries 12, 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 12-bit format only at the very end.






