pdfjoin

pdfjoin is a small command-line tool that merges several PDF files into one.

• Keeps existing outlines: bookmarks of the input PDFs are preserved.
• Adds a section per file: each input becomes a top-level bookmark named after the file.
• Doesn't abort: missing or non-PDF inputs are skipped with a warning.
• No configuration: one command, one dependency.

It needs Python 3 and pypdf:

$ pip install pypdf

It is also available through the pm user repository.

$ python pdfjoin.py <output.pdf> <input1.pdf> <input2.pdf> ...
$ python pdfjoin.py merged.pdf chapter1.pdf chapter2.pdf chapter3.pdf

• Source code