Duda is a professional website builder platform primarily targeting web design agencies, SaaS companies, and digital marketing firms that need to build and manage client sites at scale. Our detection engine identifies Duda-powered sites through a combination of 3 distinct script patterns, 8 HTML attributes or structural markup signatures, 3 CDN domains specific to Duda's content delivery infrastructure, and 1 characteristic HTTP response header that Duda injects into its served pages. These layered signals make Duda relatively straightforward to fingerprint, as its platform leaves consistent, recognizable traces across the DOM structure, asset loading behavior, and server response metadata. Duda operates as a hosted, white-label platform — meaning sites built on it are served through Duda's own infrastructure rather than self-hosted environments, which reinforces the reliability of CDN domain and header-based detection. This infrastructure consistency, combined with the platform's agency-focused positioning, means Duda sites tend to cluster around professional service, local business, and SMB verticals, giving detection results a high degree of contextual predictability.
Detect Duda Websites — Free Tool
Enter any URL to check if it was built with Duda. Instant results, no account required.
How we detect Duda — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect Duda Websites
Script Patterns
3 patterns
CDN Domains
3 patterns
HTML Patterns
8 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 duda-specific patterns in the HTML.
2. Look for Script Files
Check the Network tab in DevTools for JavaScript files loaded from Duda domains.
3. Check CDN Domains
Network requests to these CDN domains indicate a Duda site:
static\.cdn-website\.com[li]irp\.cdn-website\.comirt-cdn\.multiscreensite\.com4. 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 Duda?
You can detect if any website was built with Duda 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 Duda was used — with a confidence score.
How to detect if a website was built with Duda?
There are several ways to detect Duda: (1) View the page source and look for Duda-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to Duda CDN domains, (3) Use our free tool — we check 15 detection signals automatically.
What websites are built with Duda?
Duda is used by thousands of websites worldwide. Our scanner has detected many Duda-built sites across different industries. You can scan any URL to check if it uses Duda.
How accurate is the Duda detection?
Our Duda detection engine checks 15 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 Duda
Duda is a leading website builder used by thousands of businesses and developers worldwide. Our detection engine can identify Duda-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.
Rate this Builder
No ratings yet — be the first!
Detection Info
- Category
- Website Builder
- Signals Used
- 15 patterns
- Accuracy
- High
Compare Duda
Recently Analyzed Duda Websites
User Reviews
No reviews yet. Be the first to review Duda.