Adding Viewer Preferences
It is possible to set viewer preferences of the PDF file. These properties are described in Section 12.2 of the PDF 1.7 specification.
Note that the
/ViewerPreferences dictionary does not exist by default.
If it’s not already present, it must be created by calling the
If viewer preferences exist in a PDF file being read with
you can access them as properties of the
viewer_preferences property will be set to
from pypdf import PdfWriter from pypdf.generic import ArrayObject, NumberObject writer = PdfWriter() writer.create_viewer_preferences() # /HideToolbar writer.viewer_preferences.hide_toolbar = True # /HideMenubar writer.viewer_preferences.hide_menubar = True # /HideWindowUI writer.viewer_preferences.hide_windowui = True # /FitWindow writer.viewer_preferences.fit_window = True # /CenterWindow writer.viewer_preferences.center_window = True # /DisplayDocTitle writer.viewer_preferences.display_doctitle = True # /NonFullScreenPageMode writer.viewer_preferences.non_fullscreen_pagemode = "/UseNone" # default writer.viewer_preferences.non_fullscreen_pagemode = "/UseOutlines" writer.viewer_preferences.non_fullscreen_pagemode = "/UseThumbs" writer.viewer_preferences.non_fullscreen_pagemode = "/UseOC" # /Direction writer.viewer_preferences.direction = "/L2R" # default writer.viewer_preferences.direction = "/R2L" # /ViewArea writer.viewer_preferences.view_area = "/CropBox" # /ViewClip writer.viewer_preferences.view_clip = "/CropBox" # /PrintArea writer.viewer_preferences.print_area = "/CropBox" # /PrintClip writer.viewer_preferences.print_clip = "/CropBox" # /PrintScaling writer.viewer_preferences.print_scaling = "/None" writer.viewer_preferences.print_scaling = "/AppDefault" # default according to PDF spec # /Duplex writer.viewer_preferences.duplex = "/Simplex" writer.viewer_preferences.duplex = "/DuplexFlipShortEdge" writer.viewer_preferences.duplex = "/DuplexFlipLongEdge" # /PickTrayByPDFSize writer.viewer_preferences.pick_tray_by_pdfsize = True # /PrintPageRange writer.viewer_preferences.print_pagerange = ArrayObject( [NumberObject("1"), NumberObject("10"), NumberObject("20"), NumberObject("30")] ) # /NumCopies writer.viewer_preferences.num_copies = 2 for i in range(40): writer.add_blank_page(10, 10) with open("output.pdf", "wb") as output_stream: writer.write(output_stream)
(The names beginning with a slash character are part of the PDF file format. They are included here to aid to anyone searching pypdf documentation for these names from the PDF specification.)