Rspress is a high-performance static site generator built on the Rsbuild framework, which leverages the Rust-based Rspack bundler for superior build performance. Developed by ByteDance, it is designed to provide an efficient and developer-friendly experience for creating documentation sites, blogs, and product homepages. Rspress uses React for rendering and supports MDX, enabling users to incorporate custom React components directly into their Markdown files for enhanced interactivity. Beyond performance, Rspress focuses on AI-native capabilities, supporting the generation of llms.txt and full Markdown representations of documentation to ensure Large Language Models can effectively index and understand site content. The platform is highly extensible, offering a plugin system that allows users to customize build processes, add new routes, modify metadata, and integrate global React components into the runtime environment. Its default theme is designed with a strong emphasis on readability and offers extensive customization options via CSS variables, BEM naming, component overriding, and an eject command for full source control. Rspress also includes built-in features such as internationalization (i18n), multi-version documentation management, and high-performance full-text search powered by the FlexSearch engine.

Some of the key features are:

• Build Performance: Uses Rust-based Rspack and lazy compilation for millisecond-level dev startup and optimized production builds.
• AI-Native Integration: Generates llms.txt and compliant Markdown files to improve AI discoverability and generative engine optimization.
• MDX Support: Allows seamless integration of React components within Markdown content for rich, interactive documentation.
• Plugin System: Provides a flexible API to extend site functionality, custom routes, and build tool behavior.
• Built-in Search: Includes an out-of-the-box full-text search engine based on FlexSearch.
• Theme Customization: Offers extensive styling control via CSS variables and the ability to eject components for deep UI modifications.
• Documentation DX: Includes features like dead link checking, file-based code blocks, and automatic layout generation.
• Multi-Version Support: Simplifies the management of different documentation versions within a single project.

Operationally, Rspress is installed as a Node.js package and provides a command-line interface for development, production builds, and previewing. Users structure their documentation in a standard directory layout, and Rspress automatically handles navigation and sidebar generation based on file structure, which can be further customized through configuration. The build process outputs static HTML, making it compatible with any standard static site hosting provider. Developers can configure the site using a TypeScript-based configuration file, allowing for granular control over the build pipeline, theme, and plugin integrations.

Some common use cases include:

• Technical Documentation: Building comprehensive documentation sites for open-source projects or internal company tools.
• Component Library Documentation: Creating interactive component showcases with live previews and playgrounds using official plugins.
• Product Marketing Sites: Developing fast, SEO-friendly landing pages and product homepages with custom themes.
• Technical Blogs: Creating high-performance, developer-focused blogs with support for code highlighting and complex layout requirements.