SimilarWeb Data API — Instant Website Traffic, Keywords & AI Analytics

Extract comprehensive website traffic analytics, global ranks, category ranks, top search keywords, referral traffic sources, and AI chatbot traffic metrics for any domain. Built-in procedural User-Agent anti-blocking and lightweight stripped payloads. No signup, no API keys, no cookies — instant extraction in sub-200ms.

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✨ Key Features

• 📊 Traffic & Engagement Breakdown — Instant access to total monthly visits, bounce rates, pages per visit, and average duration on site.
• 🏆 Global & Category Rankings — Detailed global rank, country rank, and industry category rankings.
• 🔍 Top Search Keywords — Search terms with estimated traffic values, monthly search volumes, and Cost-Per-Click (CPC) metrics.
• 🤖 AI Chatbot Traffic Insights — Breakdown of referral traffic coming from AI platforms like ChatGPT, Gemini, Perplexity, Claude, and Grok.
• 🎯 Traffic Channel Distribution — Proportions across Direct, Organic Search, Paid Search, Social, Referral, Email, Display Ads, and GenAI.
• 🛡️ Anti-Blocking User-Agent Randomization — Every call dynamically generates a fresh, authentic browser User-Agent fingerprint (Chrome, Firefox, Safari across Windows, macOS, Linux, iOS, and Android).
• ⚡ 70% Lighter & Ultra-Fast Payload — Heavy 250+ country lookup tables (Countries array) are automatically stripped, reducing response sizes from >150KB to under 15KB.

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📥 Input Parameters

Parameter	Type	Required	Default	Description
domain	String	Yes	namecheap.com	Target domain or URL to analyze (e.g., namecheap.com, github.com, google.com). Protocols (https://) and trailing slashes are automatically cleaned.

Input Example (JSON):

{
  "domain": "namecheap.com"
}

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📤 Output Format & Response Examples

Output data is stored as JSON in the Key-Value store under key OUTPUT and pushed to the default Apify Dataset.

{
  "Version": 1,
  "SiteName": "namecheap.com",
  "Description": "register domain names at namecheap. buy cheap domain names and enjoy 24/7 support...",
  "Title": "Buy a domain name - Register cheap domain names from $0.99 - Namecheap",
  "TopCountryShares": [
    { "Country": 840, "CountryCode": "US", "Value": 0.3316 },
    { "Country": 356, "CountryCode": "IN", "Value": 0.0857 },
    { "Country": 826, "CountryCode": "GB", "Value": 0.0593 },
    { "Country": 124, "CountryCode": "CA", "Value": 0.0369 },
    { "Country": 586, "CountryCode": "PK", "Value": 0.0366 }
  ],
  "Engagments": {
    "BounceRate": "0.2858385021445424",
    "Month": "6",
    "Year": "2026",
    "PagePerVisit": "6.312105343569435",
    "Visits": "12098346",
    "TimeOnSite": "300.293819085654"
  },
  "EstimatedMonthlyVisits": {
    "2026-04-01": 13611605,
    "2026-05-01": 12831750,
    "2026-06-01": 12098346
  },
  "GlobalRank": {
    "Rank": 3333
  },
  "CountryRank": {
    "Country": 840,
    "CountryCode": "US",
    "Rank": 2107
  },
  "CategoryRank": {
    "Rank": "10",
    "Category": "Computers_Electronics_and_Technology/Web_Hosting_and_Domain_Names"
  },
  "TrafficSources": {
    "Direct": 0.5223651142440969,
    "SearchOrganic": 0.2587716074885727,
    "SearchPaid": 0.0715815126463767,
    "Mail": 0.04079742571257126,
    "Referrals": 0.03502500491914991,
    "SocialOrganic": 0.027432417350327934,
    "GenAi": 0.021144446279851813,
    "Affiliate": 0.013040432431168031,
    "DisplayAds": 0.008619580281668811
  },
  "TopKeywords": [
    {
      "Name": "namecheap",
      "EstimatedValue": 2260730,
      "Volume": 1937160,
      "Cpc": 1.76
    },
    {
      "Name": "godaddy",
      "EstimatedValue": 166100,
      "Volume": 3707780,
      "Cpc": 1.88
    }
  ],
  "AiTrafficDetails": {
    "Traffic": {
      "Split": [
        { "Name": "chatgpt.com", "Rank": 1 },
        { "Name": "gemini.google.com", "Rank": 2 },
        { "Name": "perplexity.ai", "Rank": 3 },
        { "Name": "claude.ai", "Rank": 4 },
        { "Name": "grok.com", "Rank": 5 }
      ]
    }
  }
}

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🆚 Why SimilarWeb Data API vs. Raw Web Scraping

Feature	SimilarWeb Data API	Traditional Web Scraping
Response Time	⚡ Sub-200ms (Edge Infrastructure)	🐢 5–15 seconds per page render
Anti-Blocking	✅ Procedurally Randomized User-Agent	❌ Frequently blocked by Cloudflare / Captchas
Payload Size	🚀 Lightweight (~15KB)	🐘 Heavy (>150KB due to country dictionaries)
Data Cleanliness	✅ Clean, structured JSON	❌ Raw HTML or unformatted JSON strings
Maintenance	✅ 100% Server Managed	❌ Breaks whenever target site layout updates

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💡 How To Use — Simple Workflow

1. Enter Domain → Pass "domain": "github.com" in the Actor input tab.
2. Run Actor → Click Start to initiate instant extraction.
3. Export Results → Download results in JSON, CSV, Excel, or XML from the Apify Dataset tab.

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🙋 Frequently Asked Questions (FAQ)

Q: Do I need to provide proxies or cookie headers?
A: No! The backend automatically generates realistic browser headers and User-Agent fingerprints for every request.

Q: Why is the Countries field missing from the output?
A: Raw SimilarWeb responses contain a massive array of 252+ static country definitions ({"Code":"AF","Name":"Afghanistan"}, ...) which inflates payload size without adding domain specific insights. Stripping this field makes the API 70% lighter and significantly faster to process in automation scripts.

Q: What happens if I input a full URL like https://www.github.com/features?
A: The input cleaner automatically strips protocols (https://), path parameters, and query strings, extracting data for the root domain (github.com).

Q: Can I use this Actor in automated Apify workflows and integrations?
A: Yes! You can trigger this Actor programmatically via the Apify REST API, Python SDK, Node.js SDK, or Zapier / Make integrations.

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🎯 Use Cases

• 📈 Competitor Intelligence & Benchmarking — Compare traffic volume, rankings, and growth trends against industry competitors.
• 🔍 SEO & Keyword Strategy — Discover top organic search terms, search volumes, and CPC estimates.
• 🤖 AI Traffic Tracking — Analyze referral traffic originating from ChatGPT, Claude, Gemini, Perplexity, and Grok.
• 💰 M&A & Investment Due Diligence — Validate website audience size, monthly traffic health, and visitor engagement metrics.
• 📊 Lead Qualification — Enrich domain leads in CRM workflows with estimated monthly visits and global rankings.

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🔍 Keywords & Tags

similarweb api, website traffic api, domain analytics, web traffic scraper, seo keywords api, competitor intelligence, ai traffic tracker, website rank api, domain traffic analytics, traffic channels