Next.js is the world's most popular React framework for production web applications, created and maintained by Vercel — powering the frontends of companies like Vercel, TikTok, Twitch, and Hulu. It supports multiple rendering strategies: static site generation (SSG), server-side rendering (SSR), incremental static regeneration (ISR), and client-side rendering — often mixing strategies across different pages within a single application. Next.js is the default choice for new React projects requiring SEO, performance, and full-stack capabilities through its API Routes and Server Components. Next.js apps are identifiable through /_next/static/ paths for all compiled JavaScript and CSS chunks, the __NEXT_DATA__ JSON embedded in every page's HTML containing initial props, x-powered-by: Next.js HTTP headers on most deployments, and the Next.js chunk naming convention for split JavaScript files.
Detect Next.js Websites — Free Tool
Enter any URL to check if it was built with Next.js. Instant results, no account required.
How to Detect Next.js Websites
Script Patterns
2 patterns
HTML Patterns
2 patterns
HTTP Headers
1 patterns
1. Check the Page Source
Open the website in your browser, right-click, and select "View Page Source". Search for next.js-specific patterns in the HTML.
2. Look for Script Files
Check the Network tab in DevTools for JavaScript files loaded from Next.js domains.
4. Use AI Website Detector (Easiest)
Our automated scanner checks all these signals at once and gives you an instant confidence score. Just enter any URL above.
Frequently Asked Questions
Is this website built with Next.js?
You can detect if any website was built with Next.js by using our free scanner above. Just enter the URL and we'll analyze HTML patterns, JavaScript files, CDN domains, and HTTP headers to determine if Next.js was used — with a confidence score.
How to detect if a website was built with Next.js?
There are several ways to detect Next.js: (1) View the page source and look for Next.js-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Next.js CDN domains, (3) Use our free tool — we check 5 detection signals automatically.
What websites are built with Next.js?
Next.js is used by thousands of websites worldwide. Our scanner has detected many Next.js-built sites across different industries. You can scan any URL to check if it uses Next.js.
How accurate is the Next.js detection?
Our Next.js detection engine checks 5 unique fingerprint signals, achieving high confidence results. We score each match and return a confidence percentage so you know how certain the detection is.
About Next.js
Next.js is a leading ai coding tool used by thousands of businesses and developers worldwide. Our detection engine can identify Next.js-built websites with high confidence by analyzing multiple technical signals.
Whether you're a developer doing competitive research, a designer looking for inspiration, or just curious about how a website was built — AI Website Detector gives you instant, accurate detection.
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Detection Info
- Category
- AI Coding Tool
- Signals Used
- 5 patterns
- Accuracy
- High
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