Clerk is a Auth Provider used by thousands of websites worldwide.
Paste any URL to instantly detect whether it was built with Clerk. Our engine checks 5 technical signals.
Clerk 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 Clerk website leaves distinctive technical fingerprints. Here's what to look for:
JavaScript Patterns
3 script patterns linked to Clerk
HTML Attributes
2 HTML patterns in the page source
Explore how Clerk compares to similar auth provider tools: