Storybook Documentation

What it is

Storybook describes itself as a frontend workshop for building UI components and pages in isolation. It lets you develop and share hard-to-reach states and edge cases without running your whole app. It is open source and free, works with React, Vue, Angular, Svelte, web components and other frameworks, and is used by many teams for UI development, testing and documentation. The documentation covers version 10.6 as of 2026-09.

Key ideas

• Stories: each story renders a component in one state, such as a primary button, a disabled button or an input with an error.
• Docs: Storybook can generate documentation pages from your stories and component props, which becomes living documentation for a design system.
• Addons and tests: accessibility checks, interaction tests and visual tests run against your stories, so regressions are caught early.
• Sharing: a published Storybook lets designers review every component state without installing anything.

Why it matters for this roadmap

The design system stage asks you to define every state of each component. Storybook is where those states live in code, side by side, so a designer can check hover, focus, error and loading states and a developer can see when a change breaks one.

Time needed

Setting up Storybook in an existing project and writing stories for a few components takes an afternoon. Learning to use its testing and documentation features well takes a few weeks of regular use.

Prerequisites

A working frontend project with components, basic JavaScript or TypeScript and familiarity with your framework. It is not for complete beginners to code.

Free or paid?

Storybook itself is free and open source under the MIT licence. Some related hosted services, such as visual testing platforms, are paid; they are optional.

How to use it well

• Write a story for every meaningful state, not just the default.
• Keep stories next to components so they are updated together.
• Turn on the accessibility addon and fix what it reports, then still test with a keyboard.
• Ask your designer to review the published Storybook before a release.

What you can do after

Build a component library whose every state is visible, documented and tested, which is the core of a design system in code.

Common questions

Is it only for React? No. It supports several frameworks; check the docs for yours.

Is it worth it for a small project? For three components, probably not. Once you have a shared component library, yes.