Print Designer Issue

Hello,
I created a print format using Print Designer. But when I want to print, the design I made in A4 format becomes smaller. If you look at the screenshot I shared attached, you will understand my problem better. Why does this happen and what do I need to do to fix the problem?

please install the correct / latest version of wkhtmltopdf with qt patched

https://wkhtmltopdf.org/downloads.html