How to Tell if a Website Uses Webflow CMS
Identifying whether a website was built with Webflow CMS 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 4 Webflow CMS-specific signals, and returns a verdict with a confidence score.
You might want to detect Webflow CMS 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 Webflow CMS?
Webflow CMS is Webflow's content management system for dynamic websites. CMS-powered Webflow sites include w-dyn-item and w-dyn-list classes for dynamic content collections.
It is primarily used for content-driven websites, blogs, news sites, documentation, and publishing platforms.
Visit Webflow CMS official websiteSigns a Website Is Built With Webflow CMS
Our detection engine checks 4 unique Webflow CMS fingerprints. Here are the most reliable signals:
CDN Domain
Assets (images, scripts, fonts) are loaded from Webflow CMS-specific CDN domains. This is one of the most reliable signals because CDN domains are hard to hide.
webflow.com/assetsHTML Attributes & Class Names
Webflow CMS injects proprietary class names, data attributes, or markup patterns into the page HTML that are unique to the platform.
w-dyn-itemw-dyn-listw-dyn-bindHow to Manually Detect Webflow CMS Websites
Method 1 — View Page Source
- Open the website in your browser
- Press
Ctrl+U(Windows) orCmd+Option+U(Mac) - Search (
Ctrl+F) forwebflow-cmsorwebflowcms - If found in script src, class names, or meta tags — it's likely Webflow CMS
Method 2 — Browser DevTools Network Tab
- Press
F12to open DevTools - Click the Network tab and reload the page
- Filter by
webflowin the search box - If you see requests to Webflow CMS-specific domains, it's confirmed
How Our Webflow CMS 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 4 Webflow CMS-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 Webflow CMS
Install Webflow CMS from https://webflow.com/cms, set up your content models, and connect a frontend framework like Next.js or Gatsby to display your content.
Other popular CMS platforms include WordPress, Ghost, Contentful, Sanity, and Strapi.
Get started with Webflow CMSFrequently Asked Questions
How can I tell if a website was built with Webflow CMS?
The most reliable ways to detect Webflow CMS are: (1) open DevTools → Network tab and look for requests to Webflow CMS-specific CDN domains, (2) view page source and search for Webflow CMS-specific class names or data attributes, (3) use our free scanner — we check 4 detection signals automatically and return a confidence score.
Is your Webflow CMS detector free?
Yes, completely free. Paste any URL into our scanner and we'll analyze it for Webflow CMS fingerprints immediately. No account required, no limits on scans.
How accurate is the Webflow CMS detection?
We check 4 unique Webflow CMS 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 Webflow CMS 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 Webflow CMS website?
If you want to build something similar, visit https://webflow.com/cms 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.