Hi Mateusz,
Thank you for your interest in Syncfusion Products.
We don’t have the direct support to convert the part of the
html file to Pdf.
However we have created the workaround for converting the
part of the html file to pdf.
The sample is attached for your reference.
Html to PDF.zip
Please let us know if you have any concern.
Thanks,
Karthikeyan.C