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Impression vs USBImager: catalog facts
Impression	USBImager
Free Free and open source under the GPLv3.	Free Free and open source under the MIT licence.
Linux	Windows, macOS, Linux
Minimal interface focused on one task Fits in with the GNOME desktop	Writes compressed images without unpacking first Runs on Windows, Linux and macOS
Linux only Fewer options than full-featured image writers	Deliberately minimal feature set Writing to the wrong drive erases it
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
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.