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img2pdf vs JPEG2PDF: catalog facts
img2pdf	JPEG2PDF
Free Free and open source.	Free Free and open source under the GPL-3.0-or-later licence, with an optional donation page.
Windows, macOS, Linux, Command line	Linux
Lossless conversion with no re-encoding of images Small output files	Converts images to PDF locally Light and dark themes
Command line only, no graphical interface Only converts images to PDF, no editing	Small project with little recent activity Linux only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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