TL;DR: v0 (v0.dev) is Vercel's AI UI generator. Describe a component in plain English (or paste a screenshot), and v0 returns React code using Tailwind CSS and shadcn/ui. It is a component generator, not a full app builder — use it to rapidly scaffold UI pieces and paste them into your existing project. Free tier available at v0.dev.

What Is v0?

v0 (pronounced "vee-zero") is an AI tool built by Vercel, the company behind Next.js and the most popular deployment platform for React apps. Released in late 2023 and continuously improved, v0 specializes in one thing: generating React UI components quickly.

Unlike Bolt.new (which generates entire apps) or Cursor (which is a full IDE), v0 is focused narrowly on the frontend UI layer. Its output integrates immediately with Next.js and React projects because Vercel built it to work with their own ecosystem.

Example v0 Prompts

"A pricing table with three tiers (Free, Pro, Enterprise), a recommended badge on the middle tier, and a CTA button for each"

"A dashboard sidebar with navigation links, user avatar, and collapse button"

"A data table with sortable columns, row selection checkboxes, and a bulk action toolbar"

Each of these returns a complete, copy-paste-ready React component with Tailwind styling.

What v0 Generates

v0's output uses a specific, opinionated tech stack:

  • React — functional components with hooks
  • Tailwind CSS — utility-class styling
  • shadcn/ui — an accessible, customizable component library built on Radix UI
  • TypeScript — typed props and interfaces

This stack is very well aligned with modern Next.js development. If your project uses this stack (which most AI-generated Next.js projects do), v0 components drop in with minimal modification.

If your project uses a different styling approach (CSS modules, styled-components, plain CSS), you can ask v0 to generate for those, but the output quality is strongest with Tailwind + shadcn/ui.

How to Use v0

  1. Go to v0.dev and sign in with a Vercel or GitHub account
  2. Type your UI description in the prompt box
  3. v0 generates a preview on the right and code on the left
  4. Iterate with follow-up prompts: "Make the button larger and change the color to blue"
  5. Click Copy Code and paste into your project

Screenshot-to-code

One of v0's most powerful features: upload a screenshot or design mockup and v0 attempts to recreate it as React code. This works remarkably well for:

  • Reproducing UI patterns from sites you like
  • Converting Figma screenshots to code
  • Replicating a design sent to you as an image

Best Use Cases

Auth pagesLogin, signup, password reset — these follow predictable patterns v0 nails every time.
Pricing tablesComplex pricing layouts with feature comparisons are tedious to build manually. v0 handles them in seconds.
Data tablesSortable, filterable tables with pagination — v0 generates these well using shadcn's table components.
NavigationNavbars, sidebars, breadcrumbs — common patterns with lots of edge cases (mobile responsive, active states) that v0 handles correctly.
FormsMulti-field forms with validation states, error messages, and submit handling — v0 generates complete form implementations.
DashboardsMetric cards, stat grids, chart containers — give v0 your data structure and get a complete dashboard layout.

Adding shadcn/ui to Your Project

v0 output uses shadcn/ui. If your Next.js project does not have it installed yet:

# Initialize shadcn/ui in your Next.js project
npx shadcn@latest init

# Install specific components as v0 uses them
npx shadcn@latest add button
npx shadcn@latest add card
npx shadcn@latest add table
# etc. — or install all at once
npx shadcn@latest add --all

shadcn/ui is not a traditional npm package — npx shadcn add copies the component source files directly into your project (into components/ui/). This means you own the code and can customize it directly.

v0 vs. Other AI UI Tools

  • v0 vs. Bolt.new: v0 generates UI components to integrate into your project. Bolt.new generates entire running apps from scratch. Use v0 for components; use Bolt for full prototypes.
  • v0 vs. Cursor: Cursor builds UI by understanding your whole codebase and modifying files. v0 generates standalone components you then paste in. For adding a new component, v0 is often faster. For modifying existing components, Cursor is better.
  • v0 vs. asking Claude directly: v0's specialized training on UI patterns produces more polished, accessible UI output than a general-purpose Claude prompt. For UI components specifically, v0 wins.

What to Learn Next

Next Step

Go to v0.dev and describe a UI component your current project needs — a card, a form, a navigation bar. Copy the output and drop it in. Even if you adjust it, the scaffold it provides cuts the work in half. Make v0 your first stop for any new UI component.

Read: What Is Bolt.new? Read: What Is React? Read: Cursor Guide

FAQ

v0 is an AI tool made by Vercel that generates React UI components from text descriptions or screenshots. It outputs code using React, Tailwind CSS, and shadcn/ui components. You describe a UI element and v0 returns ready-to-copy component code.

v0 has a free tier with monthly generation limits. Paid plans (part of Vercel's subscription offerings) provide more generations per month. The free tier is generous enough for occasional UI component generation.

v0 generates React components using Tailwind CSS for styling and shadcn/ui for component primitives. Your project needs React, Tailwind, and shadcn/ui installed to use v0 output without modification.

v0 is a UI component generator — it generates individual React components you copy into your existing project. Bolt.new is a full app generator — it creates an entire running application from scratch. Use v0 for components; use Bolt.new for new projects.

Yes. Upload a screenshot or image of a UI and v0 will attempt to generate React code that matches it. Quality varies by complexity but is often remarkably accurate for standard UI patterns like navigation, cards, and forms.