Website Tech Stack Detector — CMS, Frameworks, Analytics, Hosting

Find out what any website is built with: CMS, e-commerce platform, JavaScript frameworks, analytics, tag managers, CDN/hosting, web server, payments, chat widgets, consent tools and more — with the concrete evidence behind every single detection.

Unlike HTTP-only detectors, this actor renders each site in a real browser, so client-side frameworks (React, Next.js, Vue, Nuxt, Angular, Svelte…) are detected from the live DOM and JS globals — the signals static scanners miss.

Charged per site analyzed. No startup fee. Failed sites cost $0.

Quick start

{
  "urls": ["https://www.allbirds.com", "https://nextjs.org"]
}

→ one dataset item per site:

{
  "url": "https://www.allbirds.com",
  "techCount": 14,
  "cms": "Shopify",
  "frameworks": "React",
  "analytics": "Google Analytics (GA4), Hotjar",
  "hosting": "Cloudflare",
  "technologies": [
    { "name": "Shopify", "category": "ecommerce", "evidence": "asset: https://cdn.shopify.com/…" },
    { "name": "React", "category": "framework", "evidence": "dom: [data-reactroot]" },
    { "name": "Stripe", "category": "payments", "evidence": "asset: https://js.stripe.com/v3" }
  ]
}

What it detects (100+ technologies)

Category	Examples
CMS & builders	WordPress, Drupal, Ghost, Wix, Squarespace, Webflow, Framer, Contentful, Sanity
E-commerce	Shopify, WooCommerce, Magento, BigCommerce, PrestaShop, Salesforce Commerce
JS frameworks	React, Next.js, Gatsby, Remix, Vue, Nuxt, Angular, Svelte(Kit), Astro, Alpine, htmx, jQuery
Analytics	GA4, GTM, Plausible, Fathom, Matomo, Hotjar, Clarity, Mixpanel, Amplitude, Segment, PostHog
Marketing & support	Facebook Pixel, LinkedIn Insight, HubSpot, Klaviyo, Intercom, Drift, Crisp, Zendesk
CDN & hosting	Cloudflare, Fastly, Akamai, CloudFront, Vercel, Netlify, Fly.io, GitHub Pages
Server & language	nginx, Apache, IIS, Caddy, Express, PHP, ASP.NET, Laravel, Django, Rails
Payments	Stripe, PayPal, Braintree, Razorpay
Security & consent	reCAPTCHA, hCaptcha, Turnstile, OneTrust, Cookiebot, Sentry

Every match includes its evidence — the exact header, script URL, cookie name, DOM marker, or JS global that triggered it — so you can trust (and audit) the results.

Use cases

• Lead qualification / market research: run your prospect list through it — "all sites still on Magento", "everyone using competitor X's chat widget."
• Competitive analysis: what stack do the top players in your niche run?
• Agency audits: instant technology inventory for a new client's site.
• Sales intelligence: pair with the dataset export (CSV/JSON/Excel) and feed your CRM.

curl -X POST "https://api.apify.com/v2/acts/fetchbase~tech-stack-detector/run-sync-get-dataset-items?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"urls": ["https://example.com"]}'

Pricing

A small fixed price per site successfully analyzed, plus standard Apify platform usage. Failed sites are never billed.

FAQ

How is this different from Wappalyzer-style browser extensions? Same idea, but as an API you can run on thousands of URLs, with per-match evidence, and rendered-DOM detection for SPA frameworks.

Is this responsible to run on any site? Yes — it reads public technical metadata only (headers, asset URLs, markup patterns, cookie names). It extracts no content and no personal data.

A site failed — was I charged? No. Only successful analyses are billed.

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Missing a technology you need detected? Open an issue — fingerprints are added fast. If this saves you time, a ⭐ review helps others find it.

More tools by Fetchbase

Part of a suite of fast, no-nonsense web utilities — all pay-per-result, charged only on success, no startup fee:

• Website Screenshot API — full-page PNG / JPEG / WebP / PDF
• Website to Markdown — clean Markdown for LLMs & RAG
• PDF & DOCX to Markdown — documents → Markdown for RAG
• SEO Audit + Core Web Vitals — scored on-page audit with fixes
• Website Performance Audit — bulk Core Web Vitals & page speed
• Tech Stack Detector — CMS, frameworks, analytics, hosting
• Domain, DNS & WHOIS Lookup — records, registration, SSL
• RSS Feed Reader — RSS / Atom / JSON → normalized JSON
• Job Postings API — Greenhouse, Lever, Ashby & more

Use with AI agents (MCP)

This Actor is callable by AI agents through the Apify MCP server. Agents in Claude, Cursor, Windsurf, LangGraph, CrewAI and others can discover it via search-actors and run it as a tool — its inputs and outputs are fully described in the schema for reliable agent use.