The font-optical-sizing CSS property sets whether text rendering is optimized for viewing at different sizes.

| Initial value | none |
| Applies to | text |
| Inherited | yes |
| Animatable | no |
auto, the default value in Lynx is none. The font-optical-sizing property is a supplement to the font-variation-settings property and the optical size variation axis is represented by opsz in font-variation-settings.LCD tables only load in the browser