It’s a portable app. You can run it straight from a thumb drive without messing with your Windows registry.
While modern "productivity" apps can easily exceed 500MB, WinScan2PDF is roughly the size of a single high-res photo (around 100KB). WinScan2PDF
Most "utility" apps these days feel like they’re trying to do too much. WinScan2PDF is refreshing because it does the opposite. It’s a portable app