Addons extend Storybook with features and integrations that are not built into the core. Most Storybook features are implemented as addons. For instance: documentation, accessibility testing, interactive controls, among others. The addon API makes it easy for you to configure and customize Storybook in new ways. There are countless addons made by the community that unlocks time-saving workflows.
Browse our addon catalog to install an existing addon or as inspiration for your own addon.
Before writing your first addon, let’s take a look at the basics of Storybook’s architecture. While Storybook presents a unified user interface, under the hood it’s divided down the middle into Manager and Preview.
The Manager is the UI responsible for rendering the:
- 🔍 Search
- 🧭 Navigation
- 🔗 Toolbars
- 📦 Addons
The Preview area is an
iframe where your stories are rendered.
Because both elements run in their own separate
iframes, they use a communication channel to keep in sync. For example, when you select a story in the Manager an event is dispatched across the channel notifying the Preview to render the story.