I have two PDFs which contain a clickable table of contents. I want to append one to the other while keeping the links in the table of contents. I've tried using preview on macOS. This keeps the links for the first PDF but causes the links on the second PDF to break.
I've also tried using the Automator PDF combiner script on Mac.
I've not managed to find any solutions to this.
I'm looking for a Unix/Mac solution to this problem.
pdftk has multiple licenses available, but most prominently for the CLI interface: GPL-2+
pdftk file1.pdf file2.pdf cat output merged.pdf
should keep the ToC coherent. A quick test with a PDF generated from LibreOffice with a table of contents at the end, merged with itself, kept the 2nd ToC links coherent. Tested on Debian with the packaged version.
Sejda's Merge PDF tool will keep the links working, for both files.
Free service for documents up to 200 pages or 50 Mb and 3 tasks per hour.
It also includes an (optional) TOC generation feature, based on filenames or document titles.
The Merge PDF tool is available both as an online service and desktop application (mac, linux, win).
Disclaimer: I'm one of the developers.
