Compare software

USB Image Tool vs Win32 Disk Imager: catalog facts
USB Image Tool	Win32 Disk Imager
Free Freeware, with optional donations via PayPal.	Free Free and open source.
Windows, Command line	Windows
Exact byte copies of USB storage devices Compressed gz and zip image formats	Writes and reads raw images on SD cards and USB drives Can back up a card or stick to an image file
Windows only Closed-source freeware maintained by one developer	Windows only Reported issues with USB floppy drives and some other devices
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.