Next.js is a React-based web framework developed by Vercel, widely adopted by developers and engineering teams building production-grade web applications that require server-side rendering, static site generation, or hybrid routing architectures. AIWebsiteDetector.com identifies Next.js deployments through a combination of 2 script patterns, 2 HTML patterns, and 1 HTTP header — a multi-signal approach that yields reliable identification even when sites are deployed behind CDNs or custom domains. Common detection markers include inline script references to Next.js chunk files, characteristic `__NEXT_DATA__` JSON blocks embedded in page HTML, and the `x-powered-by: Next.js` HTTP response header present on many default deployments. The HTML-level patterns are particularly robust, as the `__NEXT_DATA__` script tag is injected server-side and persists across most configurations unless explicitly suppressed. Next.js sites are most frequently hosted on Vercel's infrastructure, though deployments on AWS, Netlify, and self-hosted Node.js servers are common — making header-based signals less universally reliable than the DOM and script pattern checks. The framework's official documentation and resources can be found at [nextjs.org](https://nextjs.org).
Paste any URL to instantly detect whether it was built with Next.js. Our engine checks 5 technical signals.
Next.js 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 Next.js website leaves distinctive technical fingerprints. Here's what to look for:
JavaScript Patterns
2 script patterns linked to Next.js
HTML Attributes
2 HTML patterns in the page source
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