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

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