What Is Amplitude?
LibraryAmplitude (amplitude.com) is an analytics service. Our scanner identifies it from the scripts, asset hostnames, headers and markup patterns listed below; a Amplitude match is a fact about the site's stack and is weighed separately from any AI-authorship evidence.
Detect Amplitude on any website:
Why Amplitude Matters
Libraries and third-party services are where a site's real behaviour lives: analytics, payments, auth, UI components and animation all arrive as scripts the browser can see. Knowing that Amplitude is on a page tells you about its dependencies, its privacy footprint, and sometimes its build pipeline — and it helps you tell template-driven stacks from hand-assembled ones. We've fingerprinted Amplitude on 4 live sites in our database, so the answers here are grounded in real scan data — not marketing copy.
Does Amplitude Mean a Site Was Built With AI?
Amplitude alone is not an AI signal.
A analytics service is standard web tooling used by hand-coding developers and AI tools alike. It becomes weak supporting context only in combination with other evidence — for example a shadcn/ui + Supabase + Vite bundle that matches a known AI-builder export — and never counts as proof on its own.
How this feeds the score: builder fingerprints, bundle artifacts and AI-tool traces are weighed separately from stack context like frameworks, libraries and hosting. The full breakdown is on How scores work.
How Websites Using Amplitude Work
- Amplitude is embedded through a third-party script tag or tag manager snippet
- Loads from the vendor's domain and sets vendor cookies or localStorage keys
- A business tooling choice — completely independent of who or what wrote the site
- Often added via Google Tag Manager rather than directly in the source
Best Practices When Working With Amplitude
Based on patterns in our scan dataset and the detection evidence tiers.
- →Start by running a Amplitude detection scan on any URL you're evaluating — the 80+ signal engine returns a confidence score plus the exact markers it matched, which beats reading view-source by hand.
- →Cross-check the result against the full detection evidence in /how-scores-work — confidence tiers tell you whether a match is strong (headers + scripts) or circumstantial (a single HTML pattern).
How we detect Amplitude — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How Our Detector Identifies Amplitude
Our scanner analyzes multiple layers of a website's technical fingerprint to detect Amplitude usage.
- Script URLs or inline script content matching "cdn.amplitude.com", "cdn2.amplitude.com" (high-confidence tier)
- HTML structure patterns such as "amplitude.init" (medium-confidence tier)
- Signal weights for Amplitude: 85 points per high-tier match, 55 per medium, 25 per low — a site needs 60+ points before Amplitude is reported.
Websites Built With Amplitude
Real sites detected by our scanner
What Amplitude Sites Usually Run Alongside
Technologies detected on the same domains as Amplitude in our most recent scans. Counts are unique domains, not page views.
Frequently Asked Questions About Amplitude
What is Amplitude?+
Amplitude (amplitude.com) is an analytics service. Our scanner identifies it from the scripts, asset hostnames, headers and markup patterns listed below; a Amplitude match is a fact about the site's stack and is weighed separately from any AI-authorship evidence.
Does Amplitude mean a website was built with AI?+
Amplitude alone is not an AI signal. A analytics service is standard web tooling used by hand-coding developers and AI tools alike. It becomes weak supporting context only in combination with other evidence — for example a shadcn/ui + Supabase + Vite bundle that matches a known AI-builder export — and never counts as proof on its own.
Why does Amplitude matter?+
Libraries and third-party services are where a site's real behaviour lives: analytics, payments, auth, UI components and animation all arrive as scripts the browser can see. Knowing that Amplitude is on a page tells you about its dependencies, its privacy footprint, and sometimes its build pipeline — and it helps you tell template-driven stacks from hand-assembled ones. We've fingerprinted Amplitude on 4 live sites in our database, so the answers here are grounded in real scan data — not marketing copy.
How do we detect Amplitude?+
Our scanner checks for these signals: Script URLs or inline script content matching "cdn.amplitude.com", "cdn2.amplitude.com" (high-confidence tier); HTML structure patterns such as "amplitude.init" (medium-confidence tier); Signal weights for Amplitude: 85 points per high-tier match, 55 per medium, 25 per low — a site needs 60+ points before Amplitude is reported.. Each match contributes to a confidence score, and the full evidence tiers are documented at /how-scores-work.
How many websites using Amplitude are in the database?+
We've fingerprinted 4+ live sites built with Amplitude across our scan dataset. The list refreshes as new scans come in.
What are the typical characteristics of a Amplitude website?+
Amplitude is embedded through a third-party script tag or tag manager snippet. Loads from the vendor's domain and sets vendor cookies or localStorage keys. A business tooling choice — completely independent of who or what wrote the site. Often added via Google Tag Manager rather than directly in the source
Related Tools & Technologies
Other libraries and services we detect
Ready to put Amplitude detection to work?
You now know what Amplitude is, why it matters, how to spot it, and where the detection signals come from. The next step is using that knowledge on a real URL — yours, a competitor's, or a prospect's.