Website Technology Stack Detector

Detect the complete technology stack of any website. This Apify Actor identifies 140+ technologies across 20+ categories including CMS platforms, JavaScript frameworks, CSS frameworks, analytics tools, advertising pixels, payment processors, CDNs, hosting providers, and more.

Why this Actor?

• BuiltWith charges $295+/month for technology lookups
• Wappalyzer was acquired and limited its free tier
• This Actor provides full detection at a fraction of the cost — $5 per 1,000 URLs

What it detects

Category	Examples
CMS	WordPress, Shopify, Wix, Squarespace, Webflow, Drupal, Joomla, Ghost, Magento
JavaScript Frameworks	React, Next.js, Vue, Nuxt, Angular, Svelte, Gatsby, Remix, Ember
CSS Frameworks	Tailwind CSS, Bootstrap, Bulma, Material UI, Chakra UI, Ant Design
Analytics	Google Analytics 4, Mixpanel, Amplitude, Hotjar, Segment, Heap, PostHog, Plausible
Advertising	Google Ads, Facebook Pixel, TikTok Pixel, LinkedIn Insight, Twitter Pixel
Payment	Stripe, PayPal, Square, Braintree, Klarna, Afterpay
CDN	Cloudflare, Fastly, AWS CloudFront, Akamai, KeyCDN
Hosting	AWS, GCP, Azure, Vercel, Netlify, Heroku, DigitalOcean, Fly.io
Email Marketing	Mailchimp, HubSpot, Klaviyo, SendGrid, ConvertKit, ActiveCampaign
Chat & Support	Intercom, Zendesk, Drift, Crisp, LiveChat, Tidio, Tawk.to
A/B Testing	Optimizely, VWO, Google Optimize, LaunchDarkly, AB Tasty
Tag Managers	Google Tag Manager, Segment, Tealium, Adobe Launch
Security	reCAPTCHA, hCaptcha, Cloudflare Turnstile, Sucuri, Wordfence
Error Tracking	Sentry, Bugsnag, Datadog RUM, LogRocket
Build Tools	Webpack, Vite, Parcel
SEO	Schema.org, Open Graph, Yoast SEO, Twitter Cards
And more	Maps, authentication, cookie consent, animations, e-commerce plugins

Detection methods

The Actor uses multiple detection techniques for high accuracy:

1. HTML analysis — meta tags, generator tags, DOM patterns
2. JavaScript globals — checks window for framework-specific variables (__NEXT_DATA__, Shopify, etc.)
3. HTTP headers — X-Powered-By, Server, CDN-specific headers
4. Script URLs — CDN patterns, library filenames
5. CSS patterns — class naming conventions (Tailwind, Bootstrap, MUI)
6. Cookies — technology-specific cookie names
7. DNS records — CNAME and NS records for CDN/hosting detection
8. robots.txt — CMS-specific paths and patterns

Each technology gets a confidence score (0–100%) based on how many signals matched. Version detection is attempted where possible.

Input

{
    "urls": [
        "https://example.com",
        "https://shopify.com",
        "https://vercel.com"
    ],
    "maxConcurrency": 5,
    "navigationTimeoutSecs": 30,
    "waitForSecs": 3,
    "checkHeaders": true,
    "checkCookies": true,
    "checkDns": true,
    "checkRobotsTxt": true
}

Field	Type	Default	Description
urls	array	(required)	URLs to analyze (max 1,000)
maxConcurrency	integer	5	Parallel page analyses
navigationTimeoutSecs	integer	30	Page load timeout
waitForSecs	integer	3	Extra wait for JS rendering
checkHeaders	boolean	true	Analyze HTTP response headers
checkCookies	boolean	true	Analyze cookie names
checkDns	boolean	true	Perform DNS lookups
checkRobotsTxt	boolean	true	Fetch and analyze robots.txt
proxyConfiguration	object	none	Proxy settings

Output

Each URL produces a dataset item:

{
    "url": "https://vercel.com",
    "domain": "vercel.com",
    "https": true,
    "technologiesCount": 12,
    "categories": "Analytics, CDN, CSS Framework, Cookie Consent, Hosting, JavaScript Framework, SEO",
    "technologies": [
        {
            "name": "Next.js",
            "category": "JavaScript Framework",
            "confidence": 100,
            "evidence": [
                { "type": "html", "matches": ["__NEXT_DATA__", "_next/static"] },
                { "type": "scripts", "matches": ["_next/static/", "_next/"] },
                { "type": "globalJs", "matches": ["__NEXT_DATA__", "__next"] },
                { "type": "headers", "matches": ["X-Powered-By: Next.js"] }
            ],
            "version": "14.0.3",
            "website": "https://nextjs.org"
        },
        {
            "name": "Vercel",
            "category": "Hosting",
            "confidence": 100,
            "evidence": [
                { "type": "headers", "matches": ["X-Vercel-Id: iad1::abcdef"] }
            ],
            "website": "https://vercel.com"
        }
    ],
    "technologyGroups": {
        "JavaScript Framework": ["Next.js", "React"],
        "Hosting": ["Vercel"],
        "CDN": ["Cloudflare"],
        "Analytics": ["Google Analytics 4"]
    },
    "analysisTimeMs": 4523,
    "analyzedAt": "2024-01-15T10:30:00.000Z"
}

A summary is also saved to the key-value store under the key SUMMARY.

Use cases

• Competitive analysis — see what technologies your competitors use
• Lead generation — find companies using specific technologies
• Market research — understand technology adoption trends
• Security audits — identify outdated or vulnerable technologies
• Agency prospecting — find sites built with specific platforms

Pricing

Pay-Per-Event: $4.00 per 1,000 URLs analyzed ($0.004 per URL).

Limitations

• Some technologies can only be detected when their JavaScript loads (requires full page render)
• Version detection is best-effort and depends on the technology exposing version info
• DNS-based detection may not work behind certain proxy configurations
• Single-page applications may need longer waitForSecs for full detection

License

ISC