Command line tool to mark PDF to open in Single Page view

Question

Short Question : Is there a PDF command line/shell tool (for osx) which can set the necessary property(ies) on a PDF for it to be opened initially in "Single Page View" (fit to window)

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More Info

I'm currently generating PDFs using WkhtmlToPdf and in some cases merging the generated files using PDFTK via PHP and some shell calls on a Mac.

However, I'd like for these documents to be opened by the users PDF reader by default in "Single Page View" / "Fit to Window".

I've come across the following question which suggests this feature was put on the feature request list for PDFTk but I can not find reference to it ever being implemented. I've also come across Advanced PDF Tools (see the -q [OpenAction] flag) however, this tool appears to only be available for Windows and I need something which supports OSX

Answer 1

You can do this with CPDF:

cpdf in.pdf -set-page-layout SinglePage AND -fit-window -o out.pdf

Answer 2

Since the questioned mentioned the command line, this answer presumes the reader knows how to create scripts and make them executable.

Using your OS's package system (for MacOS, I suggest brew) you should be able to install the python3-pike library. Then create a Python script that contains the following:

from pikepdf import Pdf, Dictionary, Name
pdf=Pdf.open('input.pdf')
pdf.root.PageLayout=Name('/SinglePage')
pdf.root.PageMode=Name('/FullScreen')
pdf.save('output.pdf')

When you run it, it will create output.pdf, which is a duplicate of input.pdf except the PDF defaults to a Single Page layout and fullscreen.