Hi, After reading the documentation and looking in the code, it would appear as you say that there is currently no facility to provide the option to fail if a font is not present.
I would therefore recommend you log a new Fop issue on bugzilla  so that should someone have time in the future, they can implement it.  https://issues.apache.org/bugzilla/ Best Regards, Robert Meyer From: christian.pes...@orange.fr To: email@example.com Subject: SubstituteFonts true/false propertie in fop config ? Date: Fri, 22 Jun 2012 14:58:43 +0200 Hi, We use Fop on a workstation to design and view pdf document (after Fop transform) After that, documents are rendered on a production server. Sometimes, the production server don’t contain fonts necessary for theses documents and Fop subtitute missing fonts. Maybe SubstituteFonts true/false propertie in fop config would be useful to failed the fo2pdf transformation instead subtitute font ? Christian Pestel christian.pes...@orange.fr