How to Convert Multiple FIT Images to IGS?
1. Download and Install reaConverter
reaConverter is a standalone Windows app — download, install, and start converting FIT files in under two minutes. Apply image edits like resize, crop, or color adjustment while converting.
2. Load your FIT files
Start reaConverter and add your .fit 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 IGS as output format
Select IGS from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

4. Start FIT to IGS 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 IGS output.
Before you convert FIT to IGS
FIT is made of pixels and IGS is a geometry format, so the two describe images in fundamentally different ways. Check the result before sending it downstream: what matters is whether the output contains editable geometry or a picture placed inside a IGS container, and that determines whether a CAD or design tool can work with it. One FIT file can hold several pages or frames, while IGS holds one image each. reaConverter writes a separate output file per page and numbers them, so a single input can produce a whole folder of results.








