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Roboto as a “parametric” Variable Font
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README.md

Roboto Delta

This project upgrades Roboto to become a Variable Font.

Download V1 latest development TTF

V1 Has all parametric axis: XTRA, XOPQ, YOPQ, YTLC, YTUC, YTAS, YTDE, YTAD, YTDD, UDLN, PWGT, PWDT, POPS, GRAD, YTRA, wght, wdth, opsz.

Download V2 latest development TTF

V2 Has blended axis: wght, wdth, opsz, GRAD

Background

This project was commissioned by Google, but is not an official Google project, and Google provides no support for it.

Roboto became a flagship Google brand typeface in 2011, as the Android operating system UI type. It is prominently positioned in the global design community, with Google using it on Android, in web apps, and for branded content at small sizes. It is the default face of the Material Design Specification, and available to everyone under an unrestrictive license, it has been adopted by more than 11M websites and has become the most popular family in the Google Fonts library.

In 2016 the OpenType format was updated with a revised version of Apple's “TrueType GX” run-time interpolation technology. The primary motivation for the OpenType specification authors to do this was obtaining dramatic reductions in the file-size of large font families, such as Google's Noto fonts. The Google Fonts team intends to go beyond compression: To make Variable Fonts meaningful.

Variations technology offers the potential of new ways to do typography, and could improve Material Specification Typography guidance in myriad ways. Today the Material typography guidelines include adjustments for tracking and font weight that are used to improve typographic-color and texture. Variations allow those adjustments to be built-in and “just work.”

After the public announcement of the technology, the Google Fonts team commissioned Font Bureau to develop a pilot project, Amstelvar, that demonstrates a novel approach that uses a system of inter-related axes. This increases the fine typographic control available to typographers, and enables a new kind of “parametric” typography.

Learn more about these axes in the Microsoft OpenType Design Variation Axis Tags proposals project

License

Fonts (UFO, TTF) are available under the SIL Open Font License v1.1

Scripts and documentation is available under the Apache 2.0

Proposed Schedule

  • Phase 1: Updated opsz, wght, wdth masters
  • Phase 2: New corner masters as necessary
  • Phase 3 (Current development): Refinements and more axes, including ital
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