Storybook
Storybook is an open-source tool for developing, testing, and documenting UI components in isolation, letting developers build and preview components outside of a full application.
Definition
Storybook is an open-source tool for developing, testing, and documenting UI components in isolation, letting developers build and preview components outside of a full application.
Overview
Storybook originated in the React ecosystem and has since become framework-agnostic, supporting Vue.js, Angular, Svelte, and others. Developers write "stories" — small files that render a component in a specific state or with specific props — which Storybook displays in an interactive, isolated UI alongside addons for tweaking props live, checking accessibility, and testing responsive layouts. Because components render in isolation from the full app, teams can build and visually verify UI before wiring up real data or business logic, and non-developers such as designers and QA can browse the same component catalog. Storybook is frequently used to build and document design systems and shared component libraries, integrated into CI to catch visual regressions with tools like Chromatic, and paired with styling systems such as Tailwind CSS or component sets like shadcn/ui in modern component-driven frontends.
Key Features
- Isolated component development outside the full application
- Interactive "stories" that showcase a component in different states or props
- Framework-agnostic support for React, Vue, Angular, Svelte, and more
- Addon ecosystem for accessibility checks, prop controls, and visual testing
- Living documentation and style guide generated directly from real components
- Integrates with visual regression testing tools like Chromatic