Ninna UI - A Better Mantine Alternative
Fewer moving parts. Same results.
Mantine is powerful but complex - MantineProvider, PostCSS setup, createTheme(), and a sprawling API. Ninna UI delivers 67 focused components with one CSS import. No providers, no PostCSS, no learning curve.
Why developers switch from Mantine
Common reasons developers move from Mantine to Ninna UI:
Overwhelmed by Mantine's API surface and package count
Want Tailwind CSS v4 native support instead of PostCSS-based styling
Need simpler theming - one CSS import vs JavaScript createTheme() configuration
Looking to reduce bundle size by dropping PostCSS and JS theming runtime
Prefer a focused component set over a monolithic library
Is it worth switching?
Mantine-to-Ninna moves are usually motivated by bundle size and theming simplicity. If you only use a fraction of Mantine's catalog but pay for the runtime anyway, a focused tree-shakeable library is a clear win.
When Mantine is the better choice
We don't think Ninna UI wins every time. Stick with Mantine if:
1
You need Mantine's enormous catalog — rich date pickers, dropzones, spotlight, charts, and dozens of hooks out of the box.
2
You're happy with a JS-based theme provider and want the deepest feature set available today.
3
You depend on Mantine-specific packages (@mantine/form, @mantine/dates) that have no direct Ninna UI equivalent.
At a glance
67
Ninna UI components
5
Theme presets included
0
JS theming runtime
Want a detailed comparison?
See a side-by-side feature table, honest trade-offs, and a step-by-step migration guide.
Mantine vs Ninna UI - Full ComparisonReady to try Ninna UI?
Install in under 60 seconds. One CSS import, zero JavaScript config.
Switching from Mantine: FAQ
What do I gain by switching from Mantine to Ninna UI?
A smaller bundle and simpler theming. You drop the MantineProvider and the JS theme object in favour of one CSS import, and you only ship the packages you actually import.
Will I have to rebuild complex Mantine components?
Possibly. Core components map cleanly, but Mantine-specific widgets (spotlight, rich date pickers) may need a third-party replacement or a custom build.
Can Mantine and Ninna UI run side by side during migration?
Yes, though you'll temporarily ship both theming systems. Migrate the shared primitives first, then the specialised components.
More alternatives
This page is for informational purposes only. All trademarks, logos, and brand names are the property of their respective owners. Information is based on official documentation and public data. Last updated: March 2026.