AutoFontSize property (Secure PDF writer)
public bool AutoFontSize
If this property is True then the following values will be assigned to different font sizes:
TitleFontSize = 8.77,
TimestampFontSize = 4.89,
SectionTitleFontSize = 7,
SectionTextFontSize = 5.
The standard unit of the symbol size in the default user space is 1/72 inch (In PDF 1.6, the size of this unit may be specified as greater than 1/72 inch by means of the UserUnit entry of the page dictionary).
The default value is True.