On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 13 on 2011-08-02 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In Chrome Android version 18 on 2012-06-27 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In Edge version 79 on 2020-01-15 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In Firefox version 1 on 2004-11-09 Note: Firefox treats geometricPrecision the same as optimizeLegibility.
In Firefox for Android version 46 on 2016-04-26 Note: Firefox treats geometricPrecision the same as optimizeLegibility.
Not in Internet Explorer
In Quest Browser version 5.0 on undefined Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In Opera version 15 on 2013-07-02 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In Opera Android version 14 on 2013-05-21 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In Safari version 6 on 2012-07-25
In Safari on iOS version 6 on 2012-09-10
In Samsung Internet version 1.0 on 2013-04-27 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In WebView Android version 4.4 on 2013-12-09 Note: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.
In WebView on iOS version 6 on 2012-09-10