Astro is a modern static site builder that ships zero JavaScript by default, making it extremely fast. Astro sites contain the unique astro-island attribute for interactive components and serve assets from the _astro/ path. It's popular for content-focused websites and documentation.
Paste any URL to instantly detect whether it was built with Astro. Our engine checks 6 technical signals.
Astro 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 Astro website leaves distinctive technical fingerprints. Here's what to look for:
JavaScript Patterns
2 script patterns linked to Astro
HTML Attributes
3 HTML patterns in the page source
Explore how Astro compares to similar ai coding tool tools: