Best for
Any developer who wants a clean, pre-configured Next.js base with shadcn/ui already wired up — the blank canvas with batteries starter
Stack
A ready-made Next.js + shadcn/ui Starter UI you can fork, run, and customize with the prompt pack below.
What's actually inside
The honest engineer's breakdown — what the Next.js + shadcn/ui Startertemplate does, how it's wired, and where it's opinionated.
This starter exists to solve one specific pain: the first 30–60 minutes of any new Next.js project spent configuring shadcn/ui, setting up dark mode, choosing a font, and wiring CSS variables. The template ships all of that done. RootLayout wraps a next-themes ThemeProvider with the correct attribute='class' setting, the Geist font is loaded via next/font/google and applied globally, and globals.css has the full set of shadcn/ui CSS variable definitions for both light and dark modes.
The homepage (HomePage) is minimal by design — a demonstration of a shadcn/ui Button, Card, and Badge so you can immediately see that the component system works. The optional ComponentsShowcase section shows more shadcn/ui variants if the forked version includes it. The Navbar has a logo slot and the ThemeToggle. There is nothing to remove — the template is lean.
The honest caveat: because this is a 'blank canvas' starter, the value is entirely in what you add to it. If you are looking for a page layout, hero section, or specific feature, a more opinionated template (like the Sidebar Layout or the 237 Landing Page) may be a faster starting point. Use this one when you know you want full control from page one and just want the tooling pre-wired.
Key UI components
RootLayoutClerkProvider-ready layout wrapping next-themes ThemeProvider with font config
ThemeToggleDark/light mode switch using next-themes useTheme() hook
NavbarTop navigation bar with logo slot and ThemeToggle on the right
HomePageMinimal hero demonstrating shadcn/ui Button, Card, and Badge components
ComponentsShowcaseOptional section demoing Button variants, Input, and Select components
globals.cssshadcn/ui CSS variable definitions for all color tokens in light and dark modes
Libraries it leans on
next-themesDark mode class injection without flash-of-wrong-theme on first load
Geist fontnext/font/google Geist Sans and Geist Mono loaded and applied globally via RootLayout
shadcn/uiFull component registry available; Button, Card, Badge pre-demonstrated in HomePage
Fork it and get it running
This template does not have a confirmed community URL — search v0.dev/community for 'Next.js shadcn/ui starter' to find the latest version. The fork and deploy process is identical once you have found it.
Find and fork the template on V0 community
Go to https://v0.dev/community and search for 'Next.js shadcn/ui starter'. Find the template that shows a clean page with a working dark mode toggle and shadcn/ui Button and Card components in the preview. Click 'Fork' to copy it into your V0 workspace. If multiple versions exist, choose the one with the most recent date.
Tip: You can also search for 'shadcn/ui boilerplate' or 'Next.js starter template' if the first search returns too many results.
You should see: The template opens in the V0 editor with a minimal hero page and dark mode toggle visible in Preview.
Verify dark mode and component renders in Preview
In the V0 Preview tab, click the ThemeToggle in the Navbar to switch between light and dark mode. Confirm the ComponentsShowcase section (if present) shows Button variants, Input, and other shadcn/ui components rendering with the correct color tokens. The Geist font should be visible. If any of these are broken, use 'Fix with v0' before continuing.
You should see: Dark mode toggles cleanly; shadcn/ui components render with correct colors; Geist font loads.
Inspect CSS variables in Design Mode
Press Option+D (Mac) to enter Design Mode. This lets you see color tokens and typography applied to elements. The shadcn/ui CSS variables (--primary, --background, --foreground, etc.) are defined in globals.css. You can change color values directly in the V0 Code tab without spending credits for simple token swaps.
Tip: Note the variable names — they follow shadcn/ui conventions and must match exactly for Tailwind classes to resolve correctly.
You should see: You can see the CSS variable structure in globals.css and understand which variables control your brand colors.
Start building your pages
The RootLayout and Navbar are already wired. Create new pages via the V0 File Explorer (Shift+Cmd+E): right-click the app/ directory → New File → e.g. app/dashboard/page.tsx. Use the V0 chat to generate page content and V0 will add components referencing the pre-configured shadcn/ui setup automatically.
Tip: This is the key advantage of the starter: every page you generate in V0 chat will pick up the existing shadcn/ui and Tailwind config without you having to explain the setup each time.
You should see: New pages appear in the file explorer and render inside the existing Navbar layout.
Publish to Vercel
Click the Share icon (top-right of the V0 editor), open the Publish tab, and click 'Publish to Production'. Your starter deploys to a vercel.app URL in 30–60 seconds. If you added NEXT_PUBLIC_ env vars in the Vars panel, they are baked in at this build.
Tip: If you add more env vars after this deployment, you must redeploy — NEXT_PUBLIC_ values are inlined at build time.
You should see: A live vercel.app URL loads your Next.js + shadcn/ui starter with dark mode working.
Connect GitHub for team collaboration
Open the Git panel in the V0 editor. Connect your GitHub account and link the project to a repo. V0 pushes code to a branch named v0/main-{hash}. From your GitHub repo, create a PR to merge into main, then pull locally to work in Cursor or VS Code with full IntelliSense for the shadcn/ui types.
You should see: Codebase is in GitHub; you can pull it locally and continue developing with your preferred editor.
The prompt pack
Copy-paste these straight into v0's chat to customize the Next.js + shadcn/ui Startertemplate. Each one names this template's own components — no generic filler.
Add a landing page hero to HomePage
Adds a proper above-the-fold hero section to the minimal HomePage without changing the Navbar or shadcn/ui config.
Add a hero section to the HomePage below the Navbar. Include a large heading ('Build your idea faster'), a subheading ('The Next.js + shadcn/ui starter that ships with dark mode, Geist font, and all CSS variables pre-wired'), and two CTA Buttons from shadcn/ui — one with the default variant and one with outline variant. Use Tailwind for spacing and center the content. Keep the existing ThemeToggle in the Navbar and the ComponentsShowcase below the hero.Update shadcn/ui brand colors in globals.css
Rebrands the entire shadcn/ui component system to your brand colors by updating the CSS variable definitions in globals.css.
Update the shadcn/ui CSS variables in globals.css to match this brand: primary #6C47FF (purple), background #F9FAFB in light mode and #0F0F11 in dark mode. Update the CSS variables --primary, --primary-foreground, --background, and --foreground for both the :root (light) and .dark selectors. Also update the Tailwind config tailwind.config.ts to ensure theme.extend.colors maps to these CSS variables correctly. Show me exactly which lines to change.
Add a blog page with data fetching
Adds a data-driven blog page as a Server Component that re-uses the existing RootLayout and shadcn/ui Card styling.
Add a /blog page at app/blog/page.tsx as a Server Component. Fetch the 5 most recent posts from https://jsonplaceholder.typicode.com/posts as a demonstration data source. Render each post in a shadcn/ui Card with title and body preview (first 100 chars). Add a 'Blog' link to the Navbar. Use Tailwind grid for the layout. This page should use the same RootLayout and ThemeProvider as the rest of the app.
Add Clerk authentication
Adds full Clerk auth to the RootLayout, protects /dashboard via middleware, and updates the Navbar with auth-aware buttons.
Wire Clerk authentication to this starter. Install @clerk/nextjs. Add ClerkProvider wrapping the next-themes ThemeProvider in app/layout.tsx using NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY and CLERK_SECRET_KEY from the Vars panel. Add a middleware.ts at the root that uses clerkMiddleware() to protect the /dashboard route. Replace the Navbar right side with a Clerk UserButton when signed in and a SignInButton when signed out. Create a basic /dashboard/page.tsx Server Component that shows 'Welcome, {user.email}'.Connect Supabase and add user profiles
Wires Supabase to the starter, creates a profiles table with RLS, and adds a /profile page that loads the user's data server-side.
Add Supabase integration to this Next.js + shadcn/ui starter. Install @supabase/supabase-js and @supabase/ssr. Add NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY to the Vars panel. Create a Supabase table 'profiles' with columns: id UUID (primary key, foreign key to auth.users), display_name TEXT, avatar_url TEXT. Add RLS policy: authenticated users can SELECT and UPDATE only their own row WHERE id = auth.uid(). Create a /profile page (Server Component) using createServerClient from @supabase/ssr that fetches the current user's profile and renders it in a shadcn/ui Card with the Navbar layout.
Gotchas when you extend it
The failures people actually hit when they push this template past its defaults — and the exact fix for each.
Dark mode flashes wrong theme on page load (FOUC)Why: next-themes injects the dark class on the client side. Without suppressHydrationWarning on the html element in RootLayout, React detects a mismatch between server HTML and client render and the page flickers to the wrong theme briefly.
Fix: Add suppressHydrationWarning to the html element in app/layout.tsx. This is the standard next-themes setup and is documented in the next-themes README.
The dark mode toggle causes a flash of wrong theme on page load. Add suppressHydrationWarning to the <html> tag in app/layout.tsx — this is required for next-themes to work correctly with Next.js SSR.
Tailwind classes not applying after customizing globals.css color tokensWhy: In Tailwind v4 projects, the CSS variable naming convention changed from --primary to --color-primary. If the forked starter uses Tailwind v4 but globals.css uses the Tailwind v3 shadcn/ui variable names, classes like bg-primary resolve to undefined.
Fix: Check tailwind.config.ts under theme.extend.colors for the CSS variable mapping. Ensure the variable names in globals.css exactly match what the config references. In Tailwind v3, use --primary; in Tailwind v4, use --color-primary.
My custom color tokens in globals.css aren't applying to shadcn/ui components. Check that the CSS variable names in globals.css match the ones referenced in tailwind.config.ts under theme.extend.colors.
The component at https://ui.shadcn.com/r/styles/new-york-v4/toast.json was not foundWhy: V0 references shadcn registry components by name. The toast component has been renamed or replaced by Sonner in recent shadcn/ui versions. The registry URL 404s when the component name no longer exists.
Fix: Use shadcn Sonner instead of the deprecated toast component. Ask V0 to replace all toast() calls with the Sonner import and add a Toaster component to RootLayout.
Replace the toast component with Sonner. Run npx shadcn add sonner and update all toast() calls to use the Sonner toast function. Import Toaster from sonner and place it in RootLayout.
NEXT_PUBLIC_ env vars are undefined after deploy even though set in Vercel DashboardWhy: NEXT_PUBLIC_ env vars are inlined at build time by Next.js. If you added them to Vercel after the last deployment, the running deployment was built without them and they will be undefined at runtime.
Fix: Trigger a fresh Vercel deployment: go to Vercel Dashboard → your project → Deployments → click the three-dot menu on the latest → Redeploy. Uncheck 'Use existing build cache' to ensure a clean build picks up the new env vars.
My NEXT_PUBLIC_ environment variables are undefined after deployment. Trigger a new deployment — env vars with NEXT_PUBLIC_ prefix are baked in at build time and need a rebuild to take effect.
Template vs. custom — the honest call
A forked template gets you far, fast. Here's where it holds up, and where you'll outgrow it.
The template is enough when
- You are starting a new Next.js project and do not want to spend an hour on shadcn/ui setup
- You know you will be building with shadcn/ui components and want all CSS variables pre-configured
- You are prototyping a SaaS and want to reach a deployable state fast with a real tech stack
- You want a base that other developers recognize and can contribute to immediately
Go custom when
- You need a specific shadcn/ui theme registered via a custom company design system registry
- You are building on Nuxt or SvelteKit — this starter is Next.js-specific and the App Router conventions do not transfer
- You are adding V0 components to an existing large codebase that already has its own Tailwind configuration and cannot adopt the shadcn/ui CSS variable approach
RapidDev upgrades V0 starters to production Next.js apps — adding auth flows, database schemas, CI/CD pipelines, and design system alignment to your forked base.
Frequently asked questions
Is this Next.js shadcn/ui starter template free?
Yes. V0 community templates are free to fork with a free V0 account. You can use the code in personal and commercial projects without any licensing restrictions.
Can I use this boilerplate for a commercial SaaS product?
Yes. There are no commercial-use restrictions on V0 community templates. You own the forked code and can ship it as a paid product.
Why does my dark mode flash the wrong theme on first load?
This is a known next-themes + Next.js SSR interaction. Add suppressHydrationWarning to the html element in app/layout.tsx. See the gotcha above for the exact fix prompt you can paste into V0 chat.
Why does my fork break in the V0 preview after I add a package?
V0's esm.sh preview sandbox cannot load some packages — particularly those that access browser APIs during SSR, use native Node.js modules, or reference the shadcn registry at a URL that has changed. Deploy to Vercel to test packages reliably. Use 'Fix with v0' on build errors before deploying.
How do I connect a database to this starter?
Add your Supabase environment variables (NEXT_PUBLIC_SUPABASE_URL, NEXT_PUBLIC_SUPABASE_ANON_KEY) in the V0 Vars panel, then paste the Supabase user profiles prompt from the prompt pack above into V0 chat. It scaffolds the table, RLS policies, and a profile page as a Server Component.
What is the difference between this starter and the Sidebar Layout template?
This starter is a minimal blank canvas — just Next.js, shadcn/ui config, dark mode, and a font. The Sidebar Layout template is a pre-built nav shell with a collapsible sidebar, TopBar, and MainContent sections. Start here if you want full control; start with Sidebar Layout if you need a multi-page app navigation structure right away.
My NEXT_PUBLIC_ env vars are undefined after deploying to Vercel. Why?
NEXT_PUBLIC_ variables are baked into the JavaScript bundle at build time. If you added them to Vercel after the last deployment, you need to trigger a new deployment (not just a redeploy from cache) for them to take effect. See the gotcha section above.
Can RapidDev help extend this starter into a production app?
Yes. RapidDev takes V0 starters and adds production-grade auth, database schemas, CI/CD pipelines, and design system alignment. Learn more at rapidevelopers.com.
Outgrowing the template?
RapidDev turns v0 prototypes into production apps — real auth, database, and payments — at $13K–$25K.
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