KPDF is a KDE PDF (Portable Document Format) viewer based on the code of the xpdf application. Although being based on xpdf c KPDF is a KDE PDF (Portable Document Format) viewer based on the code of the xpdf application. Although being based on xpdf code, KPDF has some unique features such as continuous mode and presentation support.The PDF format is widely used for publishing documents that are mostly not meant to be edited again. KPDF is only a viewer for these files and therefore it doesn't provide any functionality to edit or create PDF documents.