Thank you for contacting Syncfusion support.
Please find the details for your queries below as follows:
Query 1: By using Syncfusion.DocToPdfConverter what is the maximum size of the page I can convert from Word to PDF?
Essential DocIO library does not have any limitation regarding page size in Word to PDF conversion. You can convert a Word document to PDF with any page size, if it is supported by Microsoft Word application.
Query 2: is this commercial?
For clarifications on the commercial usage, we request to contact our sales team at firstname.lastname@example.org
Please let us know if you have any questions.