Hi, Apparently annotations are an issue that is still not resolved. You should be able to read and modify annotations that were created by other PDF readers, but poppler does not support it. There are also good reasons to store annotations separated from the original document. But each applications seems to have its own proprietary format to store and exchange annotations. I summarized some notes here:
https://github.com/nichtich/marginalia/wiki/Support-of-PDF-annotations It looks like Okular uses its own proprietary format to express annotations in metadata.xml. Can you point me to any documentation of this format? How does it compare to the format used by other applications (Xournal, iAnnotate, Evernote etc.). You could transform okular annotations to PDF annotations, and vice versa. The iText PDF library seems to support reading and adding PDF annotations. A simple sample script can be found at: https://github.com/nichtich/marginalia you should be able to get it running thanks to Maven, which makes programming in Java suck at least less. But before programming a converter for each custom annotation format - why not just using a subset of XFDF? XFDF is known for storing PDF form data, but it also supports PDF annotations in XML: XML Forms Data Format Specification (XFDF) 2.0 (2007). http://partners.adobe.com/public/developer/en/xml/xfdf_2.0.pdf PDF annotations are defined in chapter 8.4 of the PDF reference (2006), page 604-647. see http://www.verypdf.com/document/pdf-format-reference/pg_0604.htm Anyway, a standard file format for Annotations which can be extracted from and added to PDF files, would be best. Jakob -- Jakob Voß <jakob.v...@gbv.de>, skype: nichtich Verbundzentrale des GBV (VZG) / Common Library Network Platz der Goettinger Sieben 1, 37073 Göttingen, Germany +49 (0)551 39-10242, http://www.gbv.de _______________________________________________ Okular-devel mailing list Okular-devel@kde.org https://mail.kde.org/mailman/listinfo/okular-devel
