FontScale is a responsive typography tool designed to help developers and designers generate consistent font scales based on modular ratios and typographic best practices. By selecting a Google Font, weight, base font size, and scale ratio, users can preview how headings (h1 to h6), body text, and smaller elements will appear across breakpoints like desktop, tablet, and mobile. The tool instantly renders the scale visually and offers options to view sizes in px or rem.
FontScale’s real strength lies in its ability to export clean, ready-to-use CSS values tailored to your selected settings. This allows teams to quickly implement scalable typographic systems in their websites or applications without manually calculating font sizes. Its interface is minimal, intuitive, and focused on clarity—making it suitable for both beginners experimenting with visual rhythm and professionals optimizing for responsive design.