How to Convert Multiple HEIF Images to U3D?
1. Download and Install reaConverter
Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required. Need edits? Resize, rotate, or add watermarks during conversion.
2. Load your HEIF files
Open reaConverter and import your .heif files. No file limits, no slowdowns. Add as many as you need.
Drag files into the window, use the Add Files button, or select entire folders.

3. Select U3D as output format
Select U3D as target format and pick where to save results. You can keep default settings or fine-tune the output.

4. Start HEIF to U3D conversion
Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Conversion complete? Your U3D files are saved to the destination folder, ready to use.
HEIF to U3D: what carries over and what does not
HEIF is made of pixels and U3D 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 U3D container, and that determines whether a CAD or design tool can work with it. One HEIF file can hold several pages or frames, while U3D 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.






