This is directed to efficiently identifying alternative display attributes for displaying text in a display region when default display attributes are inadequate for displaying the text. Many electronic device user interfaces are designed based on text in a default language. When interfaces are translated for use in other languages, the translated interfaces can include words or phrases that are longer than the corresponding text in the initial language. To quickly find an adequate, alternate display attribute for the longer text (e.g., a new font size), the electronic device can calculate assumed reduced text box sizes for displaying the text should display attributes of the text be reduced. The electronic device can select an adequate reduced text box, and reduce the display attributes by an amount corresponding to the reduced text box.