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gscan2pdf vs Document Scanner: catalog facts
gscan2pdf	Document Scanner
Free Free open-source software packaged by Linux distributions such as Debian.	Free Free and open source under the GPLv3.
Linux	Linux
Scans straight to PDF or DjVu Uses SANE, so it works with many scanners	Minimal, easy interface Saves scans as PDF or images
Linux only Plain, dated interface	Linux only Few advanced scanning options by design
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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