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What PDF language profile is supported by Digital Editions?

April 26, 2017digital editions Language PDF profile supported

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What PDF language profile is supported by Digital Editions?

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Digital Editions supports a superset of ISO standard 19005-1 (PDF/A). PDF/A is designed to support more secure, long-term information archiving; it is based on a subset of PDF 1.4 (the version of PDF supported by Acrobat 5.0). Additional PDF capabilities in Digital Editions beyond PDF/A include basic encryption, DRM-based encryption, JBIG2 image compression, transparency, and compressed object streams. The intention is to support in Digital Editions those PDF features reasonably needed by eBooks and other commercially published content, balancing 100% coverage with a focus on small size and high performance. Also, certain capabilities defined in PDF may be delivered in Digital Editions via SWF files or the new reflow-centric EPUB format.