How to Convert Multiple NEF Images to AVIF?
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. Apply image edits like resize, crop, or color adjustment while converting.
2. Load your NEF files
Load your NEF RAW photos into reaConverter. Add entire shoots at once and process them in minutes.
Browse for files, drag them in, or add entire folders at once. reaConverter queues everything automatically.

3. Select AVIF as output format
Choose AVIF as output format. Adjust color profile, quality, and resolution settings to match your photography workflow.

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

When the batch finishes, your AVIF files are ready in the destination folder you chose earlier.
NEF to AVIF: what carries over and what does not
NEF 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. NEF 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.





