HTMLtoPDF not getting the font size from a WYSIWYG Editor

HTMLtoPDF not getting the font size from a WYSIWYG Editor

  
 I'm using HTMLtoPDF Converter to generate PDF files, the problem is, I have a template that has a font-size of 12, font is Arial. Why is it when the PDF is generated, the font size does not reflect? Even after I have set the font size to 18, it still small when the PDF is generated.
Is the HTML generated displays correctly on the browser?
 This has already been resolved. We used the " --disable-smart-shrinking" command in the OtherArgs parameter of the HTMLtoPDFConverter action.