Download FFPx right now; this is a full working version with the limitation of a maximum of 10 images. If you decide to buy the full version, you'll receive a software key that removes the restriction.

FFPx runs under Windows 10 or 11 using the .NET 4.8 environment. .NET is built in to Windows 10 but you may have an earlier version; the latest version will be downloaded automatically by the installer.