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Master PDF Editor vs word-sys's PDF Editor: catalog facts
Master PDF Editor	word-sys's PDF Editor
Freemium An unregistered version offers limited non-commercial functions. Full editing requires a…	Free Free and open source under GPL-3.0-or-later.
Windows, macOS, Linux	Linux
One of the few complete PDF editors with a real Linux build Handles forms, signatures and OCR alongside content editing	Edits text and images on PDF pages Can merge and reorder pages
The unregistered version is limited and for non-commercial use only Closed source	Linux only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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