shadcn/ui vs Ninna UI
Copy-paste component collection built on Radix + Tailwind. Compare shadcn/ui and Ninna UI side by side to find which React component library fits your project in 2026.
Quick Verdict
shadcn/ui changed how people think about component libraries — you own the code, so nothing is hidden behind an npm version. The trade-off is that you also own every bug fix, accessibility patch, and Tailwind v4 migration forever. Ninna UI keeps the same Radix + Tailwind foundation but ships it as versioned packages, so upgrades arrive through `npm update` instead of re-copying files and resolving merge conflicts by hand.
Feature Comparison
Side-by-side comparison of key features between shadcn/ui and Ninna UI.
| Feature | Ninna UI | shadcn/ui |
|---|---|---|
| Installation model | npm packages (12 scoped packages) | Copy-paste source into your project |
| Theming approach | CSS imports only - zero JS config | Manual CSS variables + components.json |
| Dark mode | Automatic via CSS - no provider needed | Manual class toggle (.dark) |
| Component count | 67 components | 60+ components |
| Accessibility | Radix UI internally for complex widgets | Radix primitives (direct dependency) |
| Bundle size | Tree-shakeable, CSS-only theming | Zero library overhead (source is yours) |
| Tailwind CSS | v4 native (CSS-first config) | v3 + v4 support |
| TypeScript | Strict mode, data-slot types | Good (you control the source) |
| Customization | 98 data-slot CSS targets + cn() | Full source control - edit anything |
| Maintenance | Standard npm update | Manual re-copy for bug fixes |
| SSR support | Full (React Router / Next.js) | Full support |
| React version | React 19+ | React 18+ |
| Color system | oklch perceptual colors | HSL variables |
| Learning curve | Low - CSS imports + React props | Medium - copy-paste workflow, Radix concepts |
| Update mechanism | npm update (semver) | Manual re-copy + merge |
Why choose Ninna UI
Key advantages of Ninna UI over shadcn/ui for your next project.
Zero maintenance burden - bug fixes delivered via npm update, not manual re-copy
No Radix peer dependencies - Ninna UI wraps Radix internally so no types leak
One CSS import for complete theming vs manual CSS variable management
oklch colors for perceptually uniform palettes vs HSL variables
98 data-slot CSS targets for surgical customization without owning source
Honest trade-offs
Where shadcn/ui has advantages - we believe in transparent comparisons.
Full source control - you can modify any component internally
Larger community and ecosystem of extensions
Supports React 18 (Ninna UI requires React 19+)
More flexible - no library API constraints
Migrating from shadcn/ui
Step-by-step guide to move your project from shadcn/ui to Ninna UI.
- 1
Replace copy-pasted components with npm imports: `import { Button } from "@ninna-ui/primitives"`
- 2
Remove Radix peer dependencies - Ninna UI wraps Radix internally via @ninna-ui/react-internal
- 3
Replace manual CSS variables with a single theme import: `@import "@ninna-ui/core/theme/presets/default.css"`
- 4
Delete `components.json` - Ninna UI uses standard npm packages
- 5
Keep all Tailwind utility classes - they work alongside Ninna UI components
Updating after an upstream fix
shadcn/ui
# A bug is fixed upstream. With shadcn/ui you re-run the CLI
# and manually merge changes into the file you already edited:
npx shadcn@latest add button
# → resolve conflicts in components/ui/button.tsx by handNinna UI
# With Ninna UI the fix arrives as a normal package update:
npm update @ninna-ui/primitives
# → no merge conflicts, your customisations live in CSSThe maintenance model is the core difference — versioned packages vs. owned source.
Ready to try Ninna UI?
Install in under 60 seconds. One CSS import, zero JavaScript config.
Looking for a shadcn/ui alternative?
See why developers switch from shadcn/ui to Ninna UI
shadcn/ui vs Ninna UI: FAQ
Is shadcn/ui a component library or a registry?
shadcn/ui is a registry of copy-paste components built on Radix UI and Tailwind. You run a CLI that drops the source into your project, so there is no runtime dependency to version. Ninna UI takes the opposite approach: the same Radix accessibility is shipped as 12 versioned npm packages you import from.
Does Ninna UI use Radix like shadcn/ui does?
Yes — both wrap Radix UI for complex widgets like dialogs and menus. The difference is exposure: with shadcn/ui you import Radix directly and manage it as a peer dependency, while Ninna UI wraps Radix internally so its types never leak into your code.
How does theming compare?
shadcn/ui uses HSL CSS variables you configure manually plus a components.json file. Ninna UI uses a single CSS import with oklch perceptual colors and five ready-made presets, with no JavaScript theme provider.
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This comparison page is for informational purposes only. Information is based on official documentation and public data. All trademarks, logos, and brand names are the property of their respective owners. Last updated: March 2026.