
Duda
Website Builder
Carrd
Website BuilderDuda and Carrd are both popular choices, but they serve different needs. Duda is a Website Builder with a traditional, manual approach to building, while Carrd is a Website Builder that prioritises developer or designer control.
Below you'll find a side-by-side breakdown of detection signals, AI scores, and technical fingerprints — plus our honest take on which builder wins for different use cases.
How we detect Duda vs Carrd — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
| Category | Website Builder | Website Builder |
| AI Score | 30/100 — No-Code / Visual Builder | 30/100 — No-Code / Visual Builder |
| Detection Signals | 15 patterns | 3 patterns |
| Script Detection | 3 patterns | 1 patterns |
| CDN Detection | 3 domains | — |
| Header Detection | 1 headers | — |
| Sites Detected | 399 scans | 148 scans |
| Best For | Designers & professional sitesTry Duda → | Designers & professional sitesTry Carrd → |
| Official Website | Visit | Visit |
Website Builder
Duda is a website builder with an AI Score of 30/100 (No-Code / Visual Builder). Our detection engine uses 15 signal patterns to identify Duda-built sites.
Website Builder
Carrd is a website builder with an AI Score of 30/100 (No-Code / Visual Builder). Our detection engine uses 3 signal patterns to identify Carrd-built sites.
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.
Carrd is a lightweight, single-page website builder popular among freelancers, creators, and developers who need simple portfolio, landing, or link-in-bio pages deployed quickly without complex tooling. AIWebsiteDetector.com identifies Carrd-powered sites through a combination of one script pattern, one HTML pattern, and one meta tag pattern embedded in the page source — signals that remain consistent across Carrd's hosted infrastructure regardless of custom domain configuration. The script pattern typically references Carrd's own asset delivery network, while the HTML and meta tag patterns reflect structural and namespace conventions that Carrd injects into every published page by default. These three detection signals work in concert to produce reliable identification even when site owners apply custom branding or remove visible Carrd attribution. Carrd operates on a freemium model, with free plans hosting sites under carrd.co subdomains and paid Pro tiers enabling custom domains — a distinction that makes subdomain-based detection straightforward, while the script and markup fingerprints ensure confident detection extends to customized deployments as well.
Choose Duda if…
Choose Carrd if…
Our Pick — Based on 547+ detections
Detected 3× more often than Carrd across our database of scanned sites.
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