What is a _brand.yml file?

It is a machine-readable YAML file that translates brand guidelines—such as colors, fonts, and logos—into a format usable across Shiny and Quarto.

Is light and dark mode supported?

Yes, the skill supports defining specific color and logo variants for both light and dark themes to ensure accessibility and design flexibility.

Does this work with both R and Python?

Yes, it provides specific implementation guides for integrating branding into Shiny for R (via bslib) and Shiny for Python (via ui.Theme).

Can I use Google Fonts with this skill?

Absolutely; the skill helps you configure typography by sourcing Google Fonts, Bunny Fonts, or local files within the YAML structure.

How does automatic discovery work?

By naming your file _brand.yml and placing it in the project root, Shiny and Quarto will automatically detect and apply the styles without needing explicit paths.

Brand.yml Identity Manager

Name: Brand.yml Identity Manager
Author: posit-dev

byposit-dev

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Design Tools

Standardizes brand identity across Shiny applications and Quarto documents using a unified YAML configuration.

About

This skill empowers developers to implement consistent corporate identities across data products by managing _brand.yml files. It streamlines the application of brand guidelines—including custom color palettes, Google Fonts, and multi-variant logos—directly into Shiny for R, Shiny for Python, and Quarto projects. By automating the integration with frameworks like bslib and Quarto’s theming system, it ensures a professional, unified look and feel while reducing manual CSS overhead and ensuring visual consistency across dashboards, reports, and presentations.

Key Features

Centralized management of typography, color palettes, and logos
Framework-specific integration for Shiny (R and Python) and Quarto
Automated _brand.yml generation from corporate style guides
Support for light/dark mode variants and semantic color mapping
Validation and troubleshooting for branding configuration issues
42 GitHub stars

Use Cases

Maintaining visual consistency between a technical document and its companion web app
Applying corporate branding to a suite of internal data dashboards
Rapidly updating logos and hex codes across multiple reporting projects simultaneously

About

Key Features

Centralized management of typography, color palettes, and logos
Framework-specific integration for Shiny (R and Python) and Quarto
Automated _brand.yml generation from corporate style guides
Support for light/dark mode variants and semantic color mapping
Validation and troubleshooting for branding configuration issues
42 GitHub stars

Use Cases

Maintaining visual consistency between a technical document and its companion web app
Applying corporate branding to a suite of internal data dashboards
Rapidly updating logos and hex codes across multiple reporting projects simultaneously