is a Python script for overlong or oversized PDF files to be reduced to factor given in percentage AND cuts those files in DIN A4 sized PDFs. You can go to the largest scale, which keeps the wanted content on one page. If it is resulting in empty pages, they will be left out.
Poppler is needed, see here for Windows install:
Download here: https://blog.alivate.com.au/poppler-windows/
how-to-install-poppler-on-windows here: https://stackoverflow.com/questions/18381713/how-to-install-poppler-on-windows