With some additional code you could make changes to exported PDF when exporting a chart into PDF format.

The changes could be like: size of page (in addition to chart), manage pages in the exported document, etc.

Note that jsPDF and svg2pdf need to be loaded for this to work (see HTML section of the example linked below).

Documentation on the used PDF object is here.

Example:

• Example of changing/modifying/hooking into PDF content on client side export (jsPDF)