Skip to content


The Codex Design Style Guide for Wikimedia ensures a consistent look and behavior for our products. Our interfaces are our brand.

These principles and guidelines aim to help designers and developers with their Wikimedia projects, as part of the Foundation or in a volunteer capacity.

The style guide features unique focus areas like accessibility, internationalization, and localization.

Our process

The Wikimedia Foundation Design Team maintains the style guide.

Our multi-disciplinary team focuses on user experience design, user research, engineering, information architecture, human-computer interaction, and visual design.

We follow design principles to provide solutions for visual identity, user interface components, and patterns.

Open to participate

We encourage and welcome your collaboration and participation to evolve the style guide.

You can engage in many ways: