Hi Albert,
Syncfusion Greetings!
Can you please confirm whether you are trying to improve the print quality of pdf file in document editor? If so, please find the details below.
Regarding Document Editor print
Since Document editor converts canvas as image for printing, its quality is not high. To print the document editor content with high quality, you can send the document editor content to server-side and convert it to pdf using DocIO and return the pdf document as base64 string to client-side and open it in preview window.
For your reference, please check the below sample which is in MVC.
Note: kindly upgrade the packages to latest version(18.2.0.47) in above sample.
Here is the DocIO documentation on converting word document to PDF. Kindly check it.
Regards,
Harini C