How to Tell if a Website Uses Notion Sites
Identifying whether a website was built with Notion Sites 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 5 Notion Sites-specific signals, and returns a verdict with a confidence score.
You might want to detect Notion Sites 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 Notion Sites?
Notion Sites is a website publishing platform built on top of Notion's document and database infrastructure, commonly used by indie makers, startups, and teams who want to publish portfolios, landing pages, documentation, or wikis directly from their Notion workspaces without managing traditional hosting. The platform leaves a distinct technical footprint that AIWebsiteDetector.com's detection engine identifies through a combination of 2 script patterns, 2 HTML patterns, and 1 meta tag pattern embedded in the rendered page source. Detection signals typically include references to Notion's core JavaScript assets served from Notion's own CDN infrastructure, along with characteristic HTML attributes and meta tag signatures that persist across pages built on the platform. These layered signals allow the detector to distinguish native Notion Sites deployments from third-party tools like Super or Potion that merely style Notion content, improving confidence accuracy across varied site configurations. Notion Sites is hosted entirely on Notion's infrastructure under the notion.site domain or custom domains, making it one of the more structurally consistent CMS targets to fingerprint — the absence of self-hosting means the underlying markup patterns remain largely uniform across the ecosystem.
It is primarily used for content-driven websites, blogs, news sites, documentation, and publishing platforms.
Visit Notion Sites official websiteSigns a Website Is Built With Notion Sites
Our detection engine checks 5 unique Notion Sites fingerprints. Here are the most reliable signals:
JavaScript / Script Files
Notion Sites loads specific JavaScript runtime files or loads scripts from identifiable URLs. Checking script src attributes reveals the platform.
notion.sonotion.siteHTML Attributes & Class Names
Notion Sites injects proprietary class names, data attributes, or markup patterns into the page HTML that are unique to the platform.
notion-data-notionMeta Tags
Some Notion Sites sites include a generator meta tag or other platform-specific meta elements in the document head.
notionHow to Manually Detect Notion Sites Websites
Method 1 — View Page Source
- Open the website in your browser
- Press
Ctrl+U(Windows) orCmd+Option+U(Mac) - Search (
Ctrl+F) fornotionornotionsites - If found in script src, class names, or meta tags — it's likely Notion Sites
Method 2 — Browser DevTools Network Tab
- Press
F12to open DevTools - Click the Network tab and reload the page
- Filter by
notionin the search box - If you see requests to Notion Sites-specific domains, it's confirmed
How Our Notion Sites 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 5 Notion Sites-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 Notion Sites
Install Notion Sites from https://notion.so, 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 Notion SitesFrequently Asked Questions
How can I tell if a website was built with Notion Sites?
The most reliable ways to detect Notion Sites are: (1) open DevTools → Network tab and look for requests to Notion Sites-specific CDN domains, (2) view page source and search for Notion Sites-specific class names or data attributes, (3) use our free scanner — we check 5 detection signals automatically and return a confidence score.
Is your Notion Sites detector free?
Yes, completely free. Paste any URL into our scanner and we'll analyze it for Notion Sites fingerprints immediately. No account required, no limits on scans.
How accurate is the Notion Sites detection?
We check 5 unique Notion Sites 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 Notion Sites 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 Notion Sites website?
If you want to build something similar, visit https://notion.so 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.