Google PageSpeed Insights & Lighthouse Scores API

Extract 0–100 numerical Lighthouse audit scores (Performance, Accessibility, Best Practices, SEO, Agentic Browsing 2/2), Core Web Vitals metrics, and actionable Audit Recommendations (Accessibility Tree, Discernible Link Names, Reduce Unused JavaScript, Render Blocking Resources, etc.) for any website URL. Powered by Google's nqfuif and LsX2he RPC backend. No API Key required. 100% procedural User-Agent anti-blocking included.

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✨ Key Features

• 📊 Lighthouse Audit Scores — Get exact 0–100 scores for Performance, Accessibility, Best Practices, and SEO.
• 🤖 Agentic Browsing Status (2/2) — Verification of AI agent readability, structured data, and schema metadata.
• 🛠️ Detailed Audit Recommendations — Specific actionable recommendations (e.g. Accessibility tree is not well-formed, Links do not have a discernible name, Reduce unused JavaScript).
• ⚡ Core Web Vitals Breakdown — Extracts FCP, LCP, CLS, TBT, TTFB, and Speed Index timing metrics.
• 📱 Mobile & Desktop Benchmark Strategies — Test websites across mobile phone and desktop computer form factors.
• 🛡️ Procedural Anti-Blocking Randomization — 100% dynamic User-Agent generation on every request (Chrome, Firefox, Safari across Mac, Windows, Linux, iOS, and Android).
• 🔐 No API Keys or Registration Needed — Unthrottled keyless RPC execution without daily 429 quota exhaustion.

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📥 Input Parameters

Parameter	Type	Required	Default	Description
url	String	Yes	https://apify.com	Target website URL or domain to audit.
strategy	String	No	mobile	Form factor benchmark: mobile or desktop.

Input Example (JSON):

{
  "url": "https://apify.com",
  "strategy": "mobile"
}

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📤 Output Format Example

{
  "success": true,
  "url": "https://apify.com",
  "strategy": "mobile",
  "form_factor_code": 2,
  "job_id": "swqu97jjz7",
  "scores": {
    "performance": 88,
    "accessibility": 95,
    "best_practices": 96,
    "seo": 98,
    "agentic_browsing": "2/2"
  },
  "agentic_browsing": {
    "score": "2/2",
    "passed": true,
    "details": [
      {
        "check": "AI Agent Accessibility & Readability",
        "status": "Pass"
      },
      {
        "check": "Structured Data & Schema Metadata",
        "status": "Pass"
      }
    ]
  },
  "metrics": {
    "first_contentful_paint": "1.4 s",
    "largest_contentful_paint": "2.2 s",
    "total_blocking_time": "120 ms",
    "cumulative_layout_shift": "0.01",
    "speed_index": "1.9 s"
  },
  "recommendations": [
    {
      "category": "Accessibility",
      "title": "Accessibility tree is not well-formed",
      "description": "Ensure interactive elements and text nodes have valid ARIA roles and landmarks for assistive technologies and AI agents.",
      "score": 75,
      "displayValue": null
    },
    {
      "category": "Accessibility",
      "title": "Links do not have a discernible name",
      "description": "Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves navigation for visitors and screen readers.",
      "score": 80,
      "displayValue": null
    },
    {
      "category": "Performance",
      "title": "Reduce unused JavaScript",
      "description": "Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.",
      "score": 63,
      "displayValue": "Est savings: 320 KiB"
    },
    {
      "category": "Performance",
      "title": "Eliminate render-blocking resources",
      "description": "Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.",
      "score": 68,
      "displayValue": "Est savings: 150 ms"
    },
    {
      "category": "SEO",
      "title": "Document does not have a meta description",
      "description": "Meta descriptions may be included in search results to concisely summarize page content.",
      "score": 83,
      "displayValue": null
    }
  ],
  "web_ui_analysis_url": "https://pagespeed.web.dev/analysis?url=https%3A%2F%2Fapify.com",
  "timestamp": "2026-07-29T23:10:00.000Z"
}

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🆚 Why PageSpeed Scores API vs. Standard Google API

Feature	PageSpeed Scores API	Standard Google REST API
API Key Requirement	⚡ Keyless (Zero API Key needed)	❌ Mandatory API Key required
Agentic Browsing (2/2)	✅ Included in JSON response	❌ Not available in raw v5 API
Audit Recommendations	✅ Included (Unused JS, ARIA, Links)	❌ Raw unparsed audit trees
Daily Quota Limits	🚀 Unthrottled Keyless RPC	🐢 Strict 429 Rate Limits / Quotas
Anti-Blocking	✅ 100% Procedural UA Randomization	❌ Single IP / Key Rate Tracking

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💡 How To Use — Simple Workflow

1. Enter URL → Enter target website URL (e.g. https://apify.com).
2. Select Strategy → Select mobile or desktop.
3. Run & Export → Click Start to extract scores and export to JSON/CSV.

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🙋 Frequently Asked Questions (FAQ)

Q: Do I need a Google Cloud account or PageSpeed API key?
A: No!

Q: Does the response include Agentic Browsing (2/2) and audit recommendations?
A: Yes! The response includes Agentic Browsing pass/fail verification along with failed audit recommendations like Accessibility tree is not well-formed, Links do not have a discernible name, and Reduce unused JavaScript.

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🎯 Use Cases

• 📈 SEO & Site Audit Automation — Benchmark performance, SEO, accessibility, and AI agent readability across client websites.
• ⚡ Core Web Vitals & Audit Recommendations — Extract FCP, LCP, CLS, TBT, and script optimization savings.
• 📊 Lead Qualification & Auditing — Audit potential client domains during sales discovery.

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🔍 Keywords & Tags

pagespeed api, google pagespeed, lighthouse api, agentic browsing, performance score, seo score, accessibility score, reduce unused javascript, core web vitals