
React
JavaScript Framework
Cloudflare CDN
CDNReact and Cloudflare CDN are both popular choices, but they serve different needs. React is a JavaScript Framework with a traditional, manual approach to building, while Cloudflare CDN is a CDN 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 React vs Cloudflare CDN — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
| Category | JavaScript Framework | CDN |
| AI Score | 40/100 — No-Code / Visual Builder | 10/100 — Unknown |
| Detection Signals | 14 patterns | 2 patterns |
| Script Detection | 6 patterns | — |
| CDN Detection | 4 domains | — |
| Header Detection | — | 2 headers |
| Sites Detected | 1,953 scans | No data yet |
| Best For | Professional websitesTry React → | Professional websitesTry Cloudflare CDN → |
| Official Website | Visit | Visit |
JavaScript Framework
React is a javascript framework with an AI Score of 40/100 (No-Code / Visual Builder). Our detection engine uses 14 signal patterns to identify React-built sites.
CDN
Cloudflare CDN is a cdn with an AI Score of 10/100 (Unknown). Our detection engine uses 2 signal patterns to identify Cloudflare CDN-built sites.
React is a declarative JavaScript library developed by Meta for building interactive user interfaces, widely adopted by startups, enterprise teams, and independent developers to power everything from single-page applications to complex web platforms. AIWebsiteDetector.com identifies React-powered sites through a combination of 4 distinct script patterns, 4 CDN domains, and 3 HTML patterns — including characteristic data attributes and DOM markers that React injects during rendering. These signals are cross-referenced against known React build artifacts and CDN delivery signatures to produce reliable detections across both production-minified and development builds. Because React is a frontend library rather than a full hosting platform, it frequently appears alongside other detectable technologies such as Next.js, Vite, or Webpack, making co-detection a common and useful signal for refining confidence scores. The official React documentation and release distribution are maintained at [react.dev](https://react.dev), and its presence on a site is technology-agnostic with respect to hosting provider — meaning React is detectable regardless of whether a site runs on Vercel, Netlify, AWS, or a self-hosted server.
Cloudflare CDN is a globally distributed content delivery network used by millions of websites — from small personal projects to large-scale enterprise platforms — to accelerate performance, improve reliability, and mitigate DDoS threats by routing traffic through Cloudflare's edge infrastructure. As one of the most widely deployed CDNs on the internet, it appears across virtually every category of website, making accurate detection both highly relevant and technically straightforward. AIWebsiteDetector.com identifies Cloudflare CDN deployments by analyzing 2 distinct HTTP response headers that Cloudflare consistently injects into traffic passing through its network, providing a reliable and precise fingerprint for detection. These headers are characteristic of Cloudflare's edge servers and remain present regardless of the underlying origin technology or CMS, which contributes to high detection confidence across diverse site types. Cloudflare CDN is available as part of Cloudflare's broader platform, with a free tier accessible to all users and paid plans unlocking advanced performance and security features — making it one of the few enterprise-grade CDN solutions with significant adoption at the hobbyist and small business level. More details about Cloudflare's CDN offering can be found at the official product page: https://www.cloudflare.com/cdn.
Choose React if…
Choose Cloudflare CDN if…
Our Pick — Based on 1,953+ detections
The most frequently detected javascript framework in our scan database.
Was this helpful?
Curious if a website uses React or Cloudflare CDN? Scan it now — free.