Question

I am to process single PDFs that have each been created by ‘merging’ multiple PDFs. Each of the merged PDF has the places where the PDF parts start displayed with a bookmark.

Is there any way to automatically split this up by bookmarks with a script?

We only have the bookmarks to indicate the parts, not the page numbers, so we would need to infer the page numbers from the bookmarks. A Linux tool would be best.

Answer 1

you have programs that are built like pdf-split that can do that for you:

A-PDF Split is a very simple, lightning-quick desktop utility program that lets you split any Acrobat pdf file into smaller pdf files. It provides complete flexibility and user control in terms of how files are split and how the split output files are uniquely named. A-PDF Split provides numerous alternatives for how your large files are split – by pages, by bookmarks and by odd/even page. Even you can extract or remove part of a PDF file. A-PDF Split also offers advanced defined splits that can be saved and later imported for use with repetitive file-splitting tasks. A-PDF Split represents the ultimate in file splitting flexibility to suit every need.

A-PDF Split works with password-protected pdf files, and can apply various pdf security features to the split output files. If needed, you can recombine the generated split files with other pdf files using a utility such as A-PDF Merger to form new composite pdf files.

A-PDF Split does NOT require Adobe Acrobat, and produces documents compatible with Adobe Acrobat Reader Version 5 and above.

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also found a free open sourced program Here if you do not want to pay.