Website Tech Stack Detector | Wappalyzer Engine — Identify CMS, Frameworks & Analytics Tools

Detect the complete technology stack of any website using a real headless browser with the Wappalyzer extension — the same fingerprinting method your browser uses, automated at scale. Built for sales teams, marketers, and security researchers who need accurate, client-side-aware results without paying $250+/month for official APIs.

✅ Real browser rendering — catches analytics pixels, chat widgets, and A/B tools HTTP-only scanners miss

✅ Confidence scores and version numbers for every detected technology

✅ Built-in security risk flags (outdated jQuery, missing headers, CMS without CDN, and more)

✅ Bulk processing — scan hundreds of URLs in a single run

✅ Export to JSON, CSV, XML, or Excel; full API access

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What Data Can Be Extracted?

Field	Description
url	The original input URL
url_normalized	Hostname only (e.g.apify.com)
scanned_at	ISO 8601 timestamp of the scan
fetch_method	Always wappalyzer_playwright
status_code	200if technologies were detected,0on failure
technologies[].name	Technology name (e.g.Next.js,Shopify)
technologies[].category	Category (e.g.JavaScript frameworks,Analytics)
technologies[].confidence	high,medium, or low
technologies[].version	Version string where available (e.g.15.5.18)
technologies[].detected_by	Detection method (wappalyzer_browser_extension)
categories	Technologies grouped by category
risk_flags[].code	Risk flag code (e.g.OUTDATED_JQUERY)
risk_flags[].level	Severity:mediumor low
tech_count	Total number of detected technologies
error	nullon success; error object with type and message on failure

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Features

• Real browser fingerprinting — a headless Chromium instance with the Wappalyzer extension runs against every target URL, executing JavaScript exactly as a real visitor's browser would
• Client-side technology detection — catches analytics pixels, chat widgets, A/B testing tools, and marketing tags that HTTP header analysis completely misses
• Confidence scoring — every result is tagged high (≥80%), medium (≥50%), or low to help you filter noise
• Version detection — captures version strings exposed by Wappalyzer (e.g. Next.js 15.5.18, jQuery 2.1.4)
• Category grouping — results organized by category (Analytics, CMS, CDN, E-Commerce, etc.) for easy downstream filtering
• Security risk flags — optional lightweight security checks per URL, no extra cost
• Bulk URL processing — paste a list; the actor handles normalization, deduplication, and sequential scanning
• Run summary record — final dataset entry with aggregated tech distribution and cost breakdown
• Graceful error handling — failed URLs are logged with error details; the run never crashes mid-batch
• Export to JSON, CSV, Excel, or XML via the Apify dataset interface
• Apify API & webhook support — trigger runs, poll status, and fetch results programmatically
• Schedule automated runs — set recurring scans via Apify Scheduler with no additional code

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How to Scan Websites for Technology Stack Data

1. Open the Actor on the Apify platform and click Try for free
2. Enter your URLs — paste one per line, or supply a JSON array. Bare domains like example.com are normalized automatically
3. Configure proxy — select Apify datacenter proxies in the Proxy section (required for reliable results on most sites)
4. Toggle risk flags — set include_risk to true to add security analysis to every result
5. Click Start — the actor runs sequentially through your URL list (~120 URLs/hour)
6. Download results — open the Dataset tab and export to JSON, CSV, or Excel, or consume via the Apify API

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Input Example

{
  "urls": [
    "https://apify.com",
    "react.dev",
    "https://www.gymshark.com"
  ],
  "include_risk": true,
  "proxyConfiguration": {
    "useApifyProxy": true,
    "apifyProxyGroups": ["DATACENTER"]
  }
}

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Output Example

{
  "url": "https://apify.com",
  "url_normalized": "apify.com",
  "scanned_at": "2026-05-26T17:02:05+00:00",
  "fetch_method": "wappalyzer_playwright",
  "status_code": 200,
  "technologies": [
    {
      "name": "Next.js",
      "category": "JavaScript frameworks",
      "confidence": "high",
      "version": "16.2.6",
      "detected_by": ["wappalyzer_browser_extension"]
    },
    {
      "name": "Google Analytics",
      "category": "Analytics",
      "confidence": "high",
      "version": null,
      "detected_by": ["wappalyzer_browser_extension"]
    }
  ],
  "categories": {
    "JavaScript frameworks": ["React", "Next.js"],
    "Analytics": ["Google Analytics", "Microsoft Clarity"],
    "CDN": ["Amazon CloudFront"]
  },
  "risk_flags": [],
  "tech_count": 22,
  "error": null
}

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Security Risk Flags

When include_risk is true, the actor appends security flags to each result at no extra cost:

Code	Level	Trigger
CMS_WITHOUT_CDN	medium	WordPress/Drupal/Joomla detected without Cloudflare, Fastly, Akamai, or similar
OUTDATED_JQUERY	medium	jQuery version < 3.x (known XSS vectors)
JQUERY_ON_ECOMMERCE	low	jQuery on a shop with unconfirmed version
FORMS_WITHOUT_CAPTCHA	low	Gravity Forms/Typeform/Formstack without reCAPTCHA or hCaptcha
EXPOSED_X_POWERED_BY	low	X-Powered-Byheader reveals PHP/ASP.NET/Express version
MISSING_SECURITY_HEADERS	low	Two or more of CSP, X-Frame-Options, X-Content-Type-Options, HSTS are absent

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Use Cases

Lead Enrichment & Sales Prospecting

Identify which CRM, live chat, or marketing automation platform a prospect uses before your first outreach. Know whether they're on HubSpot or Salesforce, Intercom or Zendesk — and tailor your pitch accordingly.

Competitive Analysis

Benchmark your own tech choices against a list of competitors. See which CDN, analytics stack, or ecommerce platform dominates your industry segment.

Market Research & Technology Adoption Studies

Map how a technology (e.g. Next.js, Shopify, Cloudflare) has spread across a defined list of domains. Build adoption curves and identify emerging trends.

Security Auditing at Scale

Surface outdated jQuery versions, CMS installations without CDN protection, and missing security headers across a portfolio of client sites or internal properties — before attackers do.

Tech Stack Migration Planning

Before switching platforms, inventory every tool in your current stack and identify what needs replacing, retiring, or migrating. Also useful for due diligence before an acquisition.

Agency & Freelance Prospecting

Find websites running outdated WordPress installations, slow page builders, or missing analytics tags — then reach out with a targeted offer to modernize their stack.

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API Access

Every actor run stores results in an Apify Dataset accessible via the REST API. You can:

• Trigger runs programmatically — POST to the actor's API endpoint with your URL list as the request body
• Poll run status — check whether a run is running, succeeded, or failed via the runs API
• Fetch results — retrieve dataset records as JSON or CSV without opening the Apify UI
• Set up webhooks — receive an HTTP callback when a run finishes, with the dataset ID included
• Schedule recurring scans — use Apify Scheduler to re-scan your URL list daily, weekly, or on any cron schedule

Full API documentation is available at docs.apify.com.

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Pricing

This actor uses pay-per-result pricing — no subscription, no minimums.

Volume	Estimated cost
60 URLs	Free (Apify free tier)
100 URLs	~$0.84
1,000 URLs	~$8.04
10,000 URLs	~$80.04

Costs include the Apify platform run fee ($0.035/run) plus $0.008 per successfully scanned URL. Failed URLs are not charged.

Tip: For batches over 500 URLs, splitting across multiple runs improves reliability and makes partial failures easier to retry.

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Why Use This Instead of Wappalyzer API or BuiltWith?

Feature	This Actor	Wappalyzer API	BuiltWith
Detection engine	Real browser + extension	Closed-source	Proprietary
Client-side JS rendering	✅ Yes	✅ Yes	✅ Yes
HTTP-only fallback tools	✅ Catches more	Varies	Varies
Confidence scores	✅	✅	✅
Version detection	✅	✅	✅
Security risk flags	✅ Built-in	❌	❌
Open source	✅	❌	❌
Price / 1,000 URLs	~$8	250+/month cap	500+/month
Pay-per-use	✅	❌	❌
Free tier	✅ (~60 URLs)	❌	❌

The key difference from HTTP-only detectors (like many open-source alternatives): technologies injected client-side — analytics pixels, chat widgets, A/B testing tools — are invisible to HTTP fingerprinting. A real browser with the Wappalyzer extension catches them reliably.

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FAQ

Is scanning websites for technology data legal?

This actor only reads publicly accessible information from websites — the same data available to any visitor's browser. It does not bypass authentication, scrape personal data, or violate GDPR. Always review the target site's Terms of Service and applicable law in your jurisdiction before commercial use.

Do I need a proxy?

Yes, a proxy is strongly recommended. Without one, many sites block or rate-limit automated browsers after a few requests. Apify datacenter proxies are sufficient — residential proxies are not required.

How many URLs can I scan in one run?

There is no hard limit. Throughput is approximately 120 URLs/hour. For large batches (500+ URLs), splitting across multiple runs improves reliability.

Can I export results to CSV or Excel?

Yes. In the Dataset tab, click Export and choose CSV, Excel, JSON, or XML. You can also download via the Apify API.

How much does it cost to scan 1,000 URLs?

Approximately $8.04, including the platform run fee and per-URL cost. The Apify free tier covers roughly 60 URLs before any payment is needed.

Can I schedule automatic scans?

Yes. Use Apify Scheduler to set up recurring runs on any cron schedule — daily, weekly, or custom intervals.

Does it detect technologies on React, Next.js, and other SPAs?

Yes. Because the actor runs a real browser that executes JavaScript, it reliably detects client-side frameworks, analytics tags, and marketing pixels — which HTTP-only tools miss entirely.

What happens if a site blocks the scanner?

The URL is logged with an error record (scan_failed type). The run continues with remaining URLs. No charge is applied for failed scans.

Can I use my own proxy instead of Apify Proxy?

Yes. Pass a custom proxy URL via the standard Apify proxy configuration field.

How do I access results via the API?

After a run completes, use the Apify REST API to fetch dataset items. The run object includes the dataset ID. See docs.apify.com/api for full reference.

What if the Wappalyzer fingerprint rules become outdated?

The actor uses the community-maintained MIT-licensed Wappalyzer ruleset. Updates to fingerprint rules are released independently and the actor is updated periodically to incorporate them.

Can I integrate this with Zapier, Make, or n8n?

Yes. Apify integrates natively with Zapier, Make (formerly Integromat), and n8n. You can trigger runs and consume results without writing any code.

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How to Scrape Website Technology Stack Data

The actor automates what Wappalyzer does in your browser: it launches a headless Chromium instance, injects the Wappalyzer extension, visits the target URL, waits for JavaScript to execute, and then reads the extension's detected technology list. The result is the same fingerprint you'd see if you visited the site yourself — but programmatic, scalable, and exportable.

To get started: open the actor, paste your URL list, configure a datacenter proxy, and click Start.

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Wappalyzer API Alternative

The official Wappalyzer API costs $250+/month for capped usage and requires a subscription commitment. This actor delivers the same detection quality on a pay-per-use basis — $0.008 per URL, no subscription, free tier included. For teams running occasional audits or one-off research projects, the cost difference is significant.

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How Much Does It Cost to Detect Technologies on a Website?

At $0.008 per URL plus a $0.035 run fee, scanning costs approximately $0.84 for 100 sites and $8.04 for 1,000. The Apify free tier provides enough credits to scan roughly 60 URLs with no payment required — useful for testing before committing to a larger run.

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Export Website Technology Data to CSV

After a run, open the Dataset tab on the Apify platform and click Export to CSV . Each row represents one scanned URL with all detected technologies, categories, confidence levels, and risk flags. The dataset is also accessible via the Apify API for automated downstream processing.

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Automate Website Technology Detection

Combine the Apify Scheduler with this actor to run recurring technology audits on a fixed URL list — useful for tracking when competitors adopt or drop specific tools. Results are stored in the Apify Dataset and can trigger webhooks, Zapier workflows, or Make scenarios automatically on run completion.

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Support

Open an issue or submit a question via the Issues tab on the actor's Apify page. For Apify platform questions (billing, API, proxy configuration), visit support.apify.com.