Dynamically Adjusting Font Metrics

A system, method and computer-readable medium are disclosed for dynamically adjusting font metrics. In some implementations, type styles are specified for text by an application running on an electronic device. If a user setting (e.g., font size) indicates a preferred type style (e.g., different font size), then the preferred type style is retrieved and one or more font metrics (e.g., leading, tracking, kerning) for the preferred type style are dynamically adjusted according to one or more rules. The text is rendered using the preferred type style with the adjusted font metric(s).