How to Convert Multiple FIT Images to PSD?
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. reaConverter also includes editing tools: resize, crop, rotate, and more.
2. Load your FIT files
Load your FIT files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.
Select FITs from a folder or drag-and-drop them directly into the reaConverter window.

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

4. Start FIT to PSD conversion
Press the Convert button and reaConverter takes care of the rest. Processing time depends on file size and volume.

After processing, find all your new .psd files in the output location. The log shows details for each conversion.
What changes when you convert FIT to PSD
FIT stores 32-bit greyscale covering the full dynamic range of the scan, and PSD shows 8 bits. The conversion applies a window level, so what ends up visible depends on the window you choose. Decide separately whether patient metadata should be copied to the output or stripped from it. FIT carries 32 bits per channel and PSD 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.







