Fallback Font Matcher

Using Fallback Font Matcher

Measure fallback widths and x-height, compare layouts and export font metric adjustments.

Choose a library font and one of the installed fallback families. The matcher measures the fallback on this device and compares its proportions and sample width.

Copy or download the CSS metric adjustments, then test them on your actual page. Matching x-height does not make every glyph width or line break identical.