Storybook 9.0 - June 2025

Storybook 9 is faster, smaller, and packed with testing features:

• Component testing
  • 👆 Interactions
  • ♿️ Accessibility
  • 👁️ Visual changes
  • 🛡️ Coverage
• 🪶 48% lighter bundle
• 🏷️ Tags-based organization
• 🌐 Story globals
• 🏗️ Major upgrades: Svelte, Next, React Native, Angular
• ➕ Much, much more

This is a major release, so there are tons of little fixes and improvements. Browse the changelogs for the full list of changes.

There are breaking changes. Please refer to our Migration guide to upgrade from pre-9.0 of Storybook.