The safest starting point is downloading the official trial version directly from the reaConverter website.

the specific "Standard edition" installer from the official website. Install and launch the application.

What (like resizing, watermarking, or cropping) do you need to apply during conversion?

If you don't want to pay for a license, the developers offer reaConverter Lite

Searching for free license keys, cracks, keygens, or patched versions of software like ReaConverter poses significant cybersecurity risks: