Print PDF reduce number of pages

I have exported Print PDF. It comes to 510 pages. But my POD partner accept only 500 page s book.

How can I reduce the pages in the Print PDF output.

I do not want to reduce the font size of the whole book.

If you don’t want to change font size, you can increase the page size and/or make sure you’ve selected ‘no blank pages’ from theme options->PDF options:

. See