TechStackDetector — Website Technology Profiler

Detect what technologies, frameworks, CMS, analytics, and services any website uses. Like BuiltWith ($295/mo) but 100x cheaper. Analyzes HTML, JavaScript, HTTP headers, meta tags, and cookies to identify 50+ technologies across 9 categories.

What it detects

Category	Technologies
CMS	WordPress, Shopify, Wix, Squarespace, Drupal, Joomla, Ghost, Webflow
Frameworks	React, Next.js, Vue.js, Nuxt.js, Angular, Svelte, Gatsby, jQuery
Analytics	Google Analytics, GTM, Facebook Pixel, Hotjar, Mixpanel, Segment, Amplitude, Plausible
CDN	Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify
Payment	Stripe, PayPal, Square
Marketing	Mailchimp, HubSpot, Intercom, Drift
Server	Nginx, Apache, Node.js, PHP, ASP.NET
Security	reCAPTCHA, hCaptcha
SEO	Schema.org, Open Graph, Twitter Cards

How it works

The detector uses Wappalyzer-style fingerprinting to identify technologies through multiple signals:

• HTML patterns — framework-specific attributes, meta tags, and DOM structure
• JavaScript globals — checks for library-specific variables (e.g., __NEXT_DATA__, __NUXT__)
• HTTP headers — server software, CDN headers, powered-by headers
• Cookie patterns — platform-specific cookies (e.g., Shopify, WordPress)
• Script URLs — known CDN and analytics script patterns

Each detection includes a confidence score (0-100) based on how many signals matched.

Use cases

• Lead qualification — Know what tech a prospect uses before reaching out. Target Shopify stores for your e-commerce app, or WordPress sites for your plugin
• Competitive analysis — See what technology competitors are using and identify industry trends
• Tech due diligence — Assess a company's tech stack for investment or M&A decisions
• SEO auditing — Check if a site has proper analytics, schema markup, CDN, and performance optimization
• Market research — Analyze technology adoption trends across thousands of sites. Find out what percentage of top e-commerce sites use Shopify vs WooCommerce

Example input

{
  "urls": ["https://stripe.com", "https://shopify.com", "https://vercel.com"],
  "maxResults": 100
}

Example output

{
  "url": "https://stripe.com",
  "technologies": ["Next.js", "React", "Cloudflare", "Stripe", "Google Tag Manager"],
  "cms": null,
  "framework": "Next.js, React",
  "analytics": "Google Tag Manager",
  "cdn": "Cloudflare",
  "payment": "Stripe",
  "totalDetected": 5,
  "scrapedAt": "2026-02-14T12:00:00.000Z"
}

Pricing

• $0.50 per actor start
• $0.003 per URL analyzed

Example: Analyzing 100 websites costs $0.50 + $0.30 = $0.80 total. BuiltWith charges $295/month for similar data — this actor is over 300x cheaper.

Tips

• Pass a list of competitor URLs to get a side-by-side technology comparison
• Use Apify proxy for sites behind Cloudflare or other anti-bot protection
• Schedule weekly runs on your prospect list to detect technology changes (e.g., a company migrating from WordPress to Shopify)
• Combine with LeadHarvest to first find businesses, then profile their tech stacks