Head-to-Head: Primer CSS vs Semantic UI React Analysis


v21.0.9(22 days ago)

This package is actively maintained.The package doesn't have any types definitionsNumber of direct dependencies: 2Monthly npm downloads

@primer/css is a utility-first CSS library that provides a set of pre-defined classes to help you style your HTML elements. It's created and maintained by GitHub's design system team and follows the Primer design system. @primer/css offers a robust set of styling options for typography, layout, color, and more.

Alternatives: Bootstrap, Tailwind CSS, Bulma

Tags: cssdesigngithubutility-firstlightweight


v2.1.4(10 months ago)

This package is actively maintained.Types definitions are bundled with the npm packageNumber of direct dependencies: 13Monthly npm downloads

Semantic UI React is a popular library that provides a set of reusable React components for building user interfaces. It is based on Semantic UI, a comprehensive CSS framework that offers a wide range of pre-designed UI elements and styles.

Alternatives: material-ui, ant-design, bootstrap-react

Tags: javascriptreactuicomponentscss-framework



Both @primer/css and Semantic UI React are popular npm packages. However, Semantic UI React has a larger user base and has been around for a longer time, making it more widely known and adopted in the React community.

Design and Styling

@primer/css is a lightweight CSS framework developed by GitHub's Primer design system. It provides a minimal and modular set of CSS classes for building responsive and accessible UI components. Semantic UI React, on the other hand, is a full-featured UI library with pre-designed React components that follow the Semantic UI design language. It offers a wide range of ready-to-use components with consistent styling.


@primer/css is highly customizable and allows you to easily override default styles and create your own design system. Semantic UI React also provides customization options, but it may require more effort to achieve a fully customized look and feel.

Integration with React

Both packages are designed specifically for React. However, Semantic UI React provides a more seamless integration as it offers a set of fully functional React components out of the box. It has built-in support for React's component lifecycle and state management, making it easier to work with and maintain.


Semantic UI React has comprehensive and well-maintained documentation, including code examples and API references. It provides clear guidelines on how to use each component and offers a lot of community-driven resources. @primer/css, being a more lightweight framework, may have slightly less extensive documentation but still provides clear guidance on how to use its CSS classes effectively.

Community Support

Semantic UI React has a large and active community, which means that finding solutions to any issues or questions you may have is easier. The community has created many additional resources, tutorials, and contributed to the library's ongoing development. While @primer/css also has a supportive community, it may be comparatively smaller due to its specific focus on providing CSS utility classes.