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Master PDF Editor vs PDF Tinkerer: catalog facts
Master PDF Editor	PDF Tinkerer
Freemium An unregistered version offers limited non-commercial functions. Full editing requires a…	Free Free and open source under the LGPL-2.1-or-later license.
Windows, macOS, Linux	Linux
One of the few complete PDF editors with a real Linux build Handles forms, signatures and OCR alongside content editing	Creates new PDFs as well as modifying existing ones Open source under LGPL
The unregistered version is limited and for non-commercial use only Closed source	Linux only Small one-person project with little public documentation
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: LGPL-2.1-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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