Preact is a JavaScript Framework used by thousands of websites worldwide.
Paste any URL to instantly detect whether it was built with Preact. Our engine checks 3 technical signals.
Preact 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 Preact website leaves distinctive technical fingerprints. Here's what to look for:
CDN Domains
Network requests to these domains are a reliable indicator:
cdn\.jsdelivr\.net\/npm\/preactunpkg\.com\/preactJavaScript Patterns
1 script pattern linked to Preact
Explore how Preact compares to similar javascript framework tools: