[itsme]

I use LibreOffice Calc to create CSV files. It's free and CSV handling is easier and more logical imho than in Microsoft Excel. It often saves time to apply OCR to a scanned TOC or copy paste from a list from the web.
Then fill the columns you want to use and call "save as CSV". The columns Title and Pages are mandatory, all other columns are optional. Take a look into the manual or in the shared examples to find out how the columns have to be named.
To add bookmarks to a PDF I use jPdfBookmarks which is also free. Once you have the CSV creating a bookmarks file is easy and duplicate effort can be avoided. I find it very convenient and helpful to have bookmarks in my PDFs but it is not mandatory at all.
See https://zubersoft.com/mobilesheets/forum...p?tid=5298