How to Convert Multiple ND2 Files to STP?
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.
2. Load your ND2 files
Launch reaConverter and drop in your ND2 files. The software queues everything for batch processing with consistent settings.
Drop your ND2 files into the window or use File menu to browse and select folders.

3. Select STP as output format
Choose STP for output and set your save location. reaConverter lets you customize quality and apply edits before conversion.

4. Start ND2 to STP conversion
Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

After conversion, find your STP files in the output folder. Click 'Show converted files' to open it directly.










