Size and scalingįont sizes in UWP apps automatically scale on all devices.
When using HTML, optical scaling is also automatic, but you will need to specify the Segoe UI Variable font in CSS. When this font or another variable font with an optical axis is used, the optical size will automatically match the requested font-size. When using XAML common controls, the Segoe UI Variable font will be selected by default for supported languages. It also has an optical size axis ( opsz) for optical scaling from 8pt to 36pt. This font has a weight axis ( wght) with weights from Thin (100) to Bold (700). The Segoe UI Variable font contains two axes for finer control of text.
