Suggest an editImprove this articleRefine the answer for “What is a UI catalog?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**A UI catalog** is a visual collection of every user interface component used in a project. **Key point:** it is needed for component reuse, design unification, and documentation, essentially, it is a showcase of every interface "building block".Shown above the full answer for quick recall.Answer (EN)ImageA UI catalog is a visual collection of every user interface component used in a project. It is needed for: - **Reviewing components.** Buttons, forms, cards, tables, and more, all in one place. - **Reuse.** Designers and developers see which elements already exist and don't reinvent them. - **Design unification.** Every element follows a single system: the same spacing, colors, fonts, behavior. - **Documentation.** A UI catalog often shows not just the visuals but a description too: how to use it, what states exist, what props are available. - **Testing.** In a catalog, it's easier to find bugs, review edge states, and check accessibility. Essentially, it is a showcase of every interface "building block". Storybook can play exactly this role.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.