A positive integer that is the DPI setting used to render text.
The font size specified in an MHT document can be expressed in pixels (PX) or points (PT). While PT units are interpreted in the same manner by all browsers regardless of the device resolution, PX unit interpretation may vary.
On low resolution devices, such as most displays, 1px is one device pixel (dot) of the display. For printers and high resolution screens, 1px implies multiple device pixels.
That is the reason for browsers to scale an MHT content whose font size is specified in PX units on high DPI devices.
The FontScalingDpiValue option allows you to adjust the scaling factor when importing MHT content whose font size is measured in PX units. By default, this property value is set to -1. Specify a valid positive setting to scale the font so it looks the same in RichEditControl and in the reference browser. Most likely, 96 is the best choice.