Is This Website Built With React Native Web?

How to Tell if a Website Uses React Native Web

Identifying whether a website was built with React Native Web used to require technical expertise — inspecting source code, tracing network requests in DevTools, and knowing which patterns to look for. Our free scanner automates all of that: it fetches the page, analyzes 3 React Native Web-specific signals, and returns a verdict with a confidence score.

You might want to detect React Native Web for competitive research, due diligence before acquiring a site, or simple curiosity. Whatever the reason, this page covers every method — automated and manual.

What is React Native Web?

React Native Web compiles React Native's native-style component API down to standard DOM output, letting teams share a single codebase between a mobile app and a web app. Sites built this way carry a distinctive fingerprint even after compilation: `react-native-web`-generated class names and accessibility data attributes (like `data-focusable`) that don't appear in ordinary web-first React code, revealing that a site is really a secondary web build of a primarily-mobile codebase.

It is primarily used for powering websites built by developers using AI coding assistants or modern JavaScript frameworks.

Visit React Native Web official website

Signs a Website Is Built With React Native Web

Our detection engine checks 3 unique React Native Web fingerprints. Here are the most reliable signals:

High Confidence

JavaScript / Script Files

React Native Web loads specific JavaScript runtime files or loads scripts from identifiable URLs. Checking script src attributes reveals the platform.

react-native-web

Medium Confidence

HTML Attributes & Class Names

React Native Web injects proprietary class names, data attributes, or markup patterns into the page HTML that are unique to the platform.

data-focusable=css-view-d

How to Manually Detect React Native Web Websites

Method 1 — View Page Source

Open the website in your browser
Press Ctrl+U (Windows) or Cmd+Option+U (Mac)
Search (Ctrl+F) for react-native-web or reactnativeweb
If found in script src, class names, or meta tags — it's likely React Native Web

Method 2 — Browser DevTools Network Tab

Press F12 to open DevTools
Click the Network tab and reload the page
Filter by react in the search box
If you see requests to React Native Web-specific domains, it's confirmed

Faster: Skip the manual steps — paste the URL into our scanner above and we check all 3 signals in seconds.

How Our React Native Web Detector Works

When you submit a URL, our engine fetches the page from its server — just like a browser would — then analyzes the response across 3 React Native Web-specific fingerprints:

Script analysis

We scan all loaded JavaScript files for known CDN paths and runtime names

CDN domain matching

We cross-reference every asset request against known platform CDNs

HTML pattern scanning

We search the DOM for platform-specific class names and data attributes

Header inspection

We read HTTP response headers that identify the server or platform

Meta tag extraction

We check generator and other meta tags in the document head

Confidence scoring

We weight each matched signal and normalize to a 0–99% score

How to Build a Similar Website With React Native Web

React Native Web is a developer tool. To build a site with it, install it via npm/yarn, initialize a project, and follow the official documentation at https://necolas.github.io/react-native-web.

Other popular frameworks and coding tools include Next.js, Astro, SvelteKit, Remix, and Gatsby.

Get started with React Native Web

Frequently Asked Questions

How can I tell if a website was built with React Native Web?

The most reliable ways to detect React Native Web are: (1) open DevTools → Network tab and look for requests to React Native Web-specific CDN domains, (2) view page source and search for React Native Web-specific class names or data attributes, (3) use our free scanner — we check 3 detection signals automatically and return a confidence score.

Is your React Native Web detector free?

Yes, completely free. Paste any URL into our scanner and we'll analyze it for React Native Web fingerprints immediately. No account required, no limits on scans.

How accurate is the React Native Web detection?

We check 3 unique React Native Web fingerprint signals across HTML, JavaScript, CDN domains, meta tags, and HTTP headers. Our confidence score reflects how many signals matched — a score above 70% is a strong indicator. We cap accuracy at 99% to reflect that all fingerprint-based detection is probabilistic.

Can React Native Web sites be detected if they use a custom domain?

Yes. Custom domains don't hide the underlying platform. The JavaScript files, CDN requests, HTML attributes, and server headers all remain identifiable regardless of the domain name used. Our scanner fetches the page directly and analyzes its technical composition.

What should I do after detecting a React Native Web website?

If you want to build something similar, visit https://necolas.github.io/react-native-web to learn more or sign up. If you're doing competitive research, our scan result also shows the full technology stack — including hosting platform, domain age, and other detected technologies. You can share the result link with your team.