Three.js is a UI Library that powers thousands of websites. Our detection engine uses multiple signals to identify Three.js-built sites with high accuracy.
Detect Three.js Websites — Free Tool
Enter any URL to check if it was built with Three.js. Instant results, no account required.
How we detect Three.js — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect Three.js Websites
Script Patterns
2 patterns
CDN Domains
2 patterns
HTML Patterns
2 patterns
1. Check the Page Source
Open the website in your browser, right-click, and select "View Page Source". Search for three.js-specific patterns in the HTML.
2. Look for Script Files
Check the Network tab in DevTools for JavaScript files loaded from Three.js domains.
3. Check CDN Domains
Network requests to these CDN domains indicate a Three.js site:
cdnjs\.cloudflare\.com\/ajax\/libs\/three\.jsunpkg\.com\/three4. 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 Three.js?
You can detect if any website was built with Three.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 Three.js was used — with a confidence score.
How to detect if a website was built with Three.js?
There are several ways to detect Three.js: (1) View the page source and look for Three.js-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Three.js CDN domains, (3) Use our free tool — we check 6 detection signals automatically.
What websites are built with Three.js?
Three.js is used by thousands of websites worldwide. Our scanner has detected many Three.js-built sites across different industries. You can scan any URL to check if it uses Three.js.
How accurate is the Three.js detection?
Our Three.js detection engine checks 6 unique fingerprint signals, achieving high confidence results. We score each match and return a confidence percentage so you know how certain the detection is.
Rate this Builder
No ratings yet — be the first!
Detection Info
- Category
- UI Library
- Signals Used
- 6 patterns
- Accuracy
- High
Similar Builders
User Reviews
No reviews yet. Be the first to review Three.js.