Alpine.js is a lightweight JavaScript framework that adds reactive, Vue-like behavior directly in HTML markup without a build step — popular with developers who want interactivity on server-rendered sites (PHP, Rails, Django, static HTML) without adopting a full SPA framework. Our engine identifies Alpine.js through 2 script patterns tied to its runtime bundle and 2 HTML patterns matching its distinctive `x-data`/`x-show`-style directive attributes, which are rarely used by any other framework and make detection highly reliable. Alpine.js is an open-source library with no hosting component of its own — detection reflects a front-end dependency, not a platform. Documented at alpinejs.dev.
Detect Alpine.js Websites — Free Tool
Enter any URL to check if it was built with Alpine.js. Instant results, no account required.
How we detect Alpine.js — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect Alpine.js Websites
Script Patterns
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 alpine.js-specific patterns in the HTML.
2. Look for Script Files
Check the Network tab in DevTools for JavaScript files loaded from Alpine.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 Alpine.js?
You can detect if any website was built with Alpine.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 Alpine.js was used — with a confidence score.
How to detect if a website was built with Alpine.js?
There are several ways to detect Alpine.js: (1) View the page source and look for Alpine.js-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Alpine.js CDN domains, (3) Use our free tool — we check 4 detection signals automatically.
What websites are built with Alpine.js?
Alpine.js is used by thousands of websites worldwide. Our scanner has detected many Alpine.js-built sites across different industries. You can scan any URL to check if it uses Alpine.js.
How accurate is the Alpine.js detection?
Our Alpine.js detection engine checks 4 unique fingerprint signals, achieving high confidence results. We score each match and return a confidence percentage so you know how certain the detection is.
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Detection Info
- Category
- JavaScript Framework
- Signals Used
- 4 patterns
- Accuracy
- High
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