I'm using PDFtk to combine multiple pdf files and create bookmarks in the combined pdf file. When the combined pdf file is opened I want to display only first two levels of bookmarks (file has total three levels of bookmarks)
Solution using pdfmark+ghostscript suggested here displays all (level) bookmarks. https://unix.stackexchange.com/questions/398806/how-to-display-bookmarks-in-the-initial-view-when-opening-a-pdf-file https://thechriskent.com/2017/03/06/setting-pdf-view-options-with-pdfmark/
I went through pdfmark reference manual by Adobe but I did not find any options. I'm not an expert in pdfmark or ghostscript.
I have Windows and looking for a command line solution (process multiple files regularly). Thanks.
Try:
cpdf -bookmarks-open-to-level <n> in.pdf -o out.pdf
where <n> is 0 for top level, 1 for next level etc...