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PDFtk Server vs Ghostscript: catalog facts
PDFtk Server	Ghostscript
Freemium Free for non-commercial use. A commercial licence is required otherwise.	Free Free and open source under the AGPL. Commercial licensing is sold separately.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Terse, stable syntax that is easy to script Fills PDF forms from FDF data, which few command-line tools do	Handles PostScript, PDF, PCL and XPS in one interpreter The de facto engine for PDF conversion and compression in print workflows
Commercial use requires a paid licence Development has been slow, and packaging varies by platform	Command line with a famously cryptic option set Commercial redistribution requires a paid Artifex licence
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
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 September 22, 2026

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