Hello,
Whenever there is a big image or table, Prince is moving it to the next page if it doesn't fit in the current page.
Is there something I could do to avoid having big blank spaces in the page before?
For example, is there a way to say "if blank space is higher than 4 cm, then..." (here I could automatically expand the line-heigth in previous paragraphs, so that the blank space is reduced).

Thanks

Have you set the images or tables as page floats? https://www.princexml.com/doc/styling/#floats