Tech Stack Detector - Website Technology Lookup

What does Tech Stack Detector do?

Tech Stack Detector tells you what any website is built with. Paste a list of URLs or domains and get back, for each site:

• CMS (WordPress, Webflow, Contentful, Drupal…) and e-commerce platform (Shopify, WooCommerce, Magento, BigCommerce…)
• Analytics, tag managers and ad pixels (Google Analytics, GTM, Meta Pixel, Hotjar, Segment…)
• JavaScript frameworks (React, Next.js, Vue, Nuxt, Svelte…), UI libraries, CDN, hosting, web server
• Payments, live chat, marketing automation, CRM, reviews, A/B testing, cookie consent and more
• Company SaaS tools from DNS — the email provider and the SaaS apps a company has verified its domain with (Google Workspace, Microsoft 365, Salesforce, HubSpot, Slack, Atlassian, Zoom…)
• Versions when exposed, confidence scores, page title, description, language and social profile links

It recognizes 7,600+ technologies in 100+ categories using an open, actively maintained fingerprint database. It's a fast, low-cost Wappalyzer and BuiltWith alternative you can run on thousands of domains at once, via the Apify API, or from Make, Zapier, n8n and Google Sheets.

Why use it?

• Lead generation & sales prospecting — find every Shopify store, every site running a competitor's product, or companies using Salesforce, then enrich your CRM.
• Competitor research — see which analytics, marketing and payment stack competitors run.
• Agencies — qualify prospects before outreach ("still on WordPress 5?", "no analytics installed?").
• Market research & investing — measure technology adoption across a list of domains.
• Security & IT audits — inventory the software and versions exposed by your own web properties.

How much does it cost?

You pay only for websites that were analyzed successfully. Failed URLs (dead domains, timeouts) are free.

Mode	Price	1,000 websites
Fast scan (default)	$0.003 per website	$3
Deep scan (real browser)	$0.008 per website	$8

The Apify free plan's monthly credit covers roughly 1,500 fast scans.

How to use it

1. Click Try for free.
2. Paste your websites into Websites — full URLs or bare domains, one per line.
3. (Optional) Turn on Deep scan for maximum accuracy on JavaScript-heavy sites.
4. Click Start, then download results as Excel, CSV, JSON or HTML, or fetch them through the API.

Fast scan vs. deep scan: the fast scan reads the HTML, HTTP headers, cookies, scripts and DNS records — enough for most CMS, e-commerce, analytics and hosting detection and very quick. The deep scan also renders the page in Chrome to catch technologies that only appear at runtime (JavaScript globals and background API calls), which helps with single-page apps and tag-manager-loaded tools.

Input example

{
    "urls": ["allbirds.com", "https://vercel.com", "wordpress.org"],
    "useBrowser": false,
    "includeDns": true,
    "minConfidence": 50
}

Output example

Each website produces one row. The Overview table has one column per category; the full JSON contains every technology with its version, categories, confidence and how it was detected.

{
    "domain": "allbirds.com",
    "finalUrl": "https://www.allbirds.com/",
    "statusCode": 200,
    "title": "Allbirds: Sustainable Shoes & Clothing",
    "cms": null,
    "ecommerce": "Shopify",
    "analytics": "Google Tag Manager",
    "payments": "Apple Pay, PayPal",
    "cdn": "Cloudflare",
    "companyToolNames": "Microsoft 365, Miro, DocuSign",
    "technologyCount": 10,
    "technologies": [
        {
            "name": "Shopify",
            "version": null,
            "confidence": 100,
            "categories": ["Ecommerce"],
            "website": "https://shopify.com",
            "saas": true,
            "openSource": false,
            "pricing": ["low", "recurring"],
            "detectedVia": ["cookies", "headers", "scripts"]
        }
    ],
    "socialLinks": { "instagram": "https://www.instagram.com/allbirds/" }
}

FAQ

How accurate is it? Detection uses the same fingerprint approach as Wappalyzer (HTML, headers, cookies, meta tags, scripts, DOM, JavaScript and DNS patterns). Each technology has a confidence score; the default threshold is 50%. Deep scan finds more technologies on JavaScript-heavy sites.

Can I analyze a whole list of domains from a CSV? Yes — paste the column into the Websites field or send it through the API. Bare domains are automatically converted to https://.

Does it scrape personal data? No. It only reads publicly served website code and public DNS records. It does not collect emails, names or any personal information.

Some sites return an error. Sites that block data-center traffic can be retried with the Proxy option enabled. You are never charged for failed websites.

Can I integrate it? Yes — use the Apify API, the official Python/JavaScript clients, or the Make, Zapier, n8n, Google Sheets and Airbyte integrations. Schedule it to monitor tech-stack changes over time.

Found a wrong or missing detection? Open an issue on the Issues tab with the URL and the technology — fixes usually ship within days.

Credits

Technology fingerprints come from the open-source webappanalyzer project (GPL-3.0).