[PYTHON] Renumber PDF pages

Need to renumber PDF pages

For page numbers of reports and books, it is common to use Roman numerals (i, ii, iii ...) in the table of contents and Arabic numerals (1, 2, 3 ...) starting from 1 in the main story. is.

However, that is not the case with the PDF version, and the pages of the PDF are often numbered with simple serial numbers. In that case, even if n pages are written in the table of contents, in the PDF version, the total number of pages in the table of contents m must be added to the (m + n) page.

To eliminate this inconvenience, I will show you how to assign page numbers similar to books to PDF.

environment

• Python
• pagelabels (python package)

To install pagelabes, run pip install pagelabels.

Run

python -m pagelabels --startpage 1 --type "roman lowercase" --outfile out.pdf in.pdf
python -m pagelabels --startpage 9 --type "arabic" out.pdf

pagelabels options

• startpage: From what page of the entire PDF to start the page with this scheme.
• style: The style of numbers. ʻArabicArabic numerals (1, 2, 3, ...),roman uppercase uppercase Roman numerals (I, II, III, ...), roman lowercaselowercase Roman numerals (i, ii,, iii, iii),letters uppercase uppercase letters (A, B, ..., Z, AA, BB, ...), letters lowercase` lowercase letters (a, b, ..., z, aa, bb, bb, ...)
• prefix: A string that precedes the page number. "page-" or something.
• firstpagenum: The first number of page numbers to allocate. If not specified, page numbers will be assigned from 1.

Appearance and operability with Adobe Acrobat Reader

• In the page thumbnail, i, ii, iii, ..., 1, 2, 3, are displayed properly.
• Page numbers are displayed as i (1/140), ii (2/140), ..., viii (8/140), 1 (9/140).
• When you enter the page number directly to jump to the desired page, enter ii or 1 in place of the page number.