Radix UI is an unstyled, accessibility-first React primitives library that underlies many modern design systems, including shadcn/ui — it provides the interaction logic and ARIA behavior for components like dialogs, dropdowns, and popovers, leaving all visual styling to the implementing site. Our engine detects it through 2 HTML patterns tied to its data-attribute and ARIA-state conventions, since Radix ships no distinctive bundled script signature of its own — detection relies entirely on the markup its primitives generate at runtime. Documented at radix-ui.com.
Paste any URL to instantly detect whether it was built with Radix UI. Our engine checks 2 technical signals.
Radix UI is used across many industries. These are the most common website types built on this platform:
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
Every Radix UI website leaves distinctive technical fingerprints. Here's what to look for:
HTML Attributes
2 HTML patterns in the page source
Explore how Radix UI compares to similar ui library tools: