What is "poppler" Poppler is a PDF rendering library based on xpdf-3.0 Supported by Qt4, Qt5, Glib and C++, documentation: Qt4: http://people.freedesktop.org/~aacid/Docs/Qt4/ Qt5: http://people.freedesktop.org/~aacid/Docs/Qt5/ Glib: http://people.freedesktop.org/~ajohnson/Docs/poppler-glib/ C++: http://marpirk.github.io/poppler-cpp-doc/