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Vivliostyle vs WeasyPrint: catalog facts
Vivliostyle	WeasyPrint
Free Free and open source.	Free Free and open source under the BSD 3-Clause licence; paid support packages are offered.
Web, Command line	Command line
Book layout written in standard CSS Browser viewer and command-line PDF export	Uses standard HTML and CSS print features No browser engine needed
Requires familiarity with HTML and CSS Vivliostyle Pub is still in alpha	Requires a Python 3.10+ environment Aimed at developers rather than casual PDF conversion
Downloadable app, Web application	Downloadable app
Open source	Open source
License not stated	License: BSD-3-Clause
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 October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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