The font-optical-sizing property automatically sets the font-size to the opsz - optical sizing axis of variable fonts that support optical sizing. This improves styling and legibility of fonts depending on font size because the font chooses a glyph shape that works optimally at the given font size. For example, the glyph contrast is improved in fonts in heading sizes when compared to the same font at body text size. See the spec link for an illustration of optical sizing.
Status in Chromium
Enabled by default (tracking bug) in:
- Chrome for desktop release 79
- Chrome for Android release 79
- Android WebView release 79
Consensus & Standardization
Last updated on 2019-09-18