Tailwind CSS is a utility-first CSS framework widely adopted by frontend developers, indie hackers, and modern web agencies who prefer composing designs directly in HTML markup rather than writing custom stylesheets. Unlike traditional CSS frameworks, Tailwind generates styles through low-level utility classes applied inline, which leaves distinctive fingerprints in a site's HTML structure that make it reliably identifiable. AIWebsiteDetector's detection engine identifies Tailwind CSS deployments using a combination of 2 script patterns, 2 CDN domains, and 1 HTML pattern — signals that cover both self-hosted builds and CDN-delivered distributions commonly used during development or prototyping. The presence of Tailwind's CDN-served stylesheet or its compiled output embedded via script tags serves as a high-confidence indicator, particularly when paired with characteristic class naming conventions visible directly in the page's HTML attributes. Tailwind CSS is framework-agnostic and integrates with virtually any stack — from static HTML sites to React, Vue, and Laravel applications — making it one of the more broadly distributed frontend technologies in the detection database. Its usage across a wide range of site types, from personal portfolios to production SaaS products, reflects both its flexibility and its position as a dominant tool in contemporary frontend development.
Detect Tailwind CSS Websites — Free Tool
Enter any URL to check if it was built with Tailwind CSS. Instant results, no account required.
How we detect Tailwind CSS — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect Tailwind CSS Websites
Script Patterns
2 patterns
CDN Domains
2 patterns
HTML Patterns
1 patterns
1. Check the Page Source
Open the website in your browser, right-click, and select "View Page Source". Search for tailwind css-specific patterns in the HTML.
2. Look for Script Files
Check the Network tab in DevTools for JavaScript files loaded from Tailwind CSS domains.
3. Check CDN Domains
Network requests to these CDN domains indicate a Tailwind CSS site:
cdn\.tailwindcss\.comunpkg\.com\/tailwindcss4. 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 Tailwind CSS?
You can detect if any website was built with Tailwind CSS 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 Tailwind CSS was used — with a confidence score.
How to detect if a website was built with Tailwind CSS?
There are several ways to detect Tailwind CSS: (1) View the page source and look for Tailwind CSS-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Tailwind CSS CDN domains, (3) Use our free tool — we check 5 detection signals automatically.
What websites are built with Tailwind CSS?
Tailwind CSS is used by thousands of websites worldwide. Our scanner has detected many Tailwind CSS-built sites across different industries. You can scan any URL to check if it uses Tailwind CSS.
How accurate is the Tailwind CSS detection?
Our Tailwind CSS 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 Tailwind CSS
Tailwind CSS is a leading ai coding tool used by thousands of businesses and developers worldwide. Our detection engine can identify Tailwind CSS-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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