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Win32 Disk Imager vs ImageUSB: catalog facts
Win32 Disk Imager	ImageUSB
Free Free and open source.	Free Free to download and use.
Windows	Windows
Writes and reads raw images on SD cards and USB drives Can back up a card or stick to an image file	Writes one image to many USB drives concurrently Bit-level copies that preserve slack space and the MBR
Windows only Reported issues with USB floppy drives and some other devices	Writing CD ISO images directly may not produce a bootable drive on every system Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
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 September 23, 2026

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