Some change behavior of features, others are for debugging or experimenting.
You can also try setting Print to PDF as a default printer to fix the problems with this feature. Method 4: Set Print to PDF as Default Printer. Also see: How to Disable the PDF Reader in Microsoft Edge In Windows 10.
4) In the select a destination dialog box, choose the “Save as PDF” option. 3) In the print dialog box, click the “Change” button under Destination. 2) Click the printer icon in the box at the bottom right of the screen or you can do a File/Print. PDF file in the Google Chrome Internet Browser.