Is it possible in the liquid code to know where your export to PDF will start a new page?
In addition is it possible to allign the content in the length of the page in the export as well? So do we not only have the possibility to use jusitfy, left, center, … to allign the content horizontally but also to use them vertically?
There’s no way to really know where a new page will start in liquid.
You can however dictate in your liquid code that a new page should definitely start with the {% newpage %} tag.
Vertical alignment is possible, but only within cells of HTML tables by using usr-valign-top etc.