Website Technology Checker - Tech Stack & CMS Detector

Find out what any website is built with. Paste a list of domains, get back the CMS, e-commerce platform, analytics, ad pixels, payment providers, booking system, live chat, email marketing, CRM, CDN and cookie-consent tool each one runs.

180+ technologies. One request per site. You are never charged for a domain that could not be analyzed.

What you get per website

{
  "url": "https://www.gymbeam.cz",
  "httpStatus": 200,
  "techCount": 8,
  "categoriesDetected": ["analytics", "cdn", "cms", "cookieConsent", "ecommerce", "reviews"],
  "technologies": [
    "Astro", "Cloudflare", "CookieBot", "Google Cloud CDN",
    "Google Reviews Widget", "Google Tag Manager", "Magento", "Trustpilot"
  ],
  "techStack": {
    "cms": ["Astro"],
    "ecommerce": ["Magento"],
    "analytics": ["Google Tag Manager"],
    "cookieConsent": ["CookieBot"],
    "cdn": ["Cloudflare", "Google Cloud CDN"],
    "reviews": ["Trustpilot", "Google Reviews Widget"]
  },
  "seoSignals": { "titleTag": "...", "metaDescription": "...", "hasCanonical": true },
  "contactMethods": { "email": "info@example.cz", "contactForm": true },
  "socialPresence": { "facebook": "https://facebook.com/...", "instagram": null }
}

A markdown report also lands in the key-value store as SUMMARY, with category coverage and the most common technologies across everything you checked.

Detection that survives first-party proxying

This is where most tech-stack scanners quietly get it wrong.

Larger sites increasingly serve their analytics and consent scripts from their own domain to defeat ad blockers. A scanner that only looks for third-party hostnames (googletagmanager.com/gtm.js) then reports "no analytics" on a site that is fully instrumented.

This checker also matches:

• Container and measurement IDs in loader and config contexts — so GTM-XXXXXXX served from /metrics/?id=… is still found
• Consent managers by their JavaScript API (Cookiebot.renew(), OptanonWrapper) rather than only their CDN
• Any IAB TCF platform via __tcfapi, whatever the vendor
• Hosted booking platforms as the site itself — a business whose website is a Booksy, Noona, Fresha or Reservio profile genuinely has booking

IDs are matched case-sensitively, so ordinary markup like class="g-recaptcha" is not mistaken for Google Analytics.

Categories

Category	Examples
CMS	WordPress, Wix, Squarespace, Shopify, Webflow, Joomla, Drupal, Astro, Next.js
E-commerce	WooCommerce, Shopify, Magento, BigCommerce, PrestaShop, Shoptet, Upgates
Booking	Booksy, Fresha, Noona, Calendly, Acuity, Mindbody, Reservio, Bookio, Vagaro
Analytics	GA4, Google Tag Manager, Hotjar, Clarity, Matomo, Plausible, PostHog
Ad pixels	Meta Pixel, Google Ads, TikTok, Pinterest, LinkedIn, Criteo, Sklik
Payments	Stripe, PayPal, Square, Klarna, Adyen, GoPay, Comgate, ThePay
Email marketing	Mailchimp, Klaviyo, ActiveCampaign, Brevo, MailerLite, Ecomail
Live chat	Intercom, Tidio, Crisp, tawk.to, Zendesk, Smartsupp
CRM	HubSpot, Salesforce, Zoho, Pipedrive, Freshsales
Cookie consent	Cookiebot, OneTrust, CookieYes, Osano, Iubenda, any IAB TCF CMP
CDN / hosting	Cloudflare, CloudFront, Vercel, Netlify, Fastly, Akamai
Reviews	Trustpilot, Google Reviews, Yelp, Judge.me, Yotpo
A/B testing	Optimizely, VWO, AB Tasty, LaunchDarkly
Error tracking	Sentry, LogRocket, Bugsnag, Datadog RUM
Accessibility	UserWay, AccessiBe, AudioEye, EqualWeb
Fonts / icons	Google Fonts, Adobe Fonts, Font Awesome

Includes Czech and Slovak tooling that global scanners miss: Shoptet, Upgates, Reservio, Bookio, Reenio, GoPay, Comgate, ThePay, Ecomail, SmartEmailing, Seznam Sklik, Smartsupp.

Input

{
  "urls": ["gymbeam.cz", "https://shopify.com", "notino.cz"],
  "includeSignals": true
}

Domains work without a scheme. You can also pass objects with a url field, or paste a newline- or comma-separated list.

Field	Default	Notes
urls	—	Websites to check (required)
includeSignals	true	Adds SEO, conversion, contact and social data at no extra cost
proxyConfiguration	Apify Proxy	Used only to retry sites that block the direct request
concurrency	10	Sites checked in parallel

Pricing

$0.004 per website analyzed. Nothing else.

What you are never charged for

Situation	Charged?
Unreachable host, timeout, or HTTP error	No
Parked domain, "for sale" page, default server page	No
Blank or placeholder page with no readable content	No
Website analyzed	Yes — $0.004

Every skipped row still appears in the dataset with a skipReason and a plain-English skipDetail, so a domain never silently disappears from your results — you just do not pay for it.

Example: 500 domains, 480 reachable → $1.92.

Blocked websites

Some sites refuse anonymous requests. When one answers 403, 429 or similar bot protection, the check is retried once through your proxy and the result is flagged with usedProxy. Sites that answer normally are fetched directly, so proxy traffic — which bills to your account — stays limited to the ones that need it.

Most sites do not block. A few large retailers fingerprint the HTTP client itself rather than the IP, so a proxy will not always get through; those are reported unreachable and not charged for.

Common uses

• Prospecting — find businesses missing the software you sell
• Competitive research — see what stack competitors run
• Partner and agency audits — inventory a client portfolio in one run
• Lead enrichment — append tech data to a list you already have
• Market sizing — measure platform adoption across a vertical

Scanning businesses straight from a Google Maps search, with lead scoring and outreach material, is covered by B2B Lead Generation & Prospecting.