PageSpeed & Lighthouse Audit: Bulk Core Web Vitals

Audit the speed and quality of any number of websites with Google Lighthouse, the same engine behind PageSpeed Insights. You get performance, SEO, accessibility and best-practices scores, Core Web Vitals, the biggest speed fixes and a list of SEO and accessibility problems for every page, on mobile, desktop or both.

No Google API key and no quotas. Lighthouse runs inside the Actor. You pay only for completed audits. Pages that fail to load are never charged.

What you get for each page

Field	Meaning
performanceScore, seoScore, accessibilityScore, bestPracticesScore	0–100 Lighthouse scores
performanceRating	good (90+), needs-improvement (50–89), poor (<50)
lcpMs, fcpMs, tbtMs, cls, speedIndexMs, ttfbMs	Core Web Vitals and other lab metrics
ratings	good / needs-improvement / poor for every metric by Google's thresholds
pageWeightKb, requests	how heavy the page is
opportunities	the biggest speed fixes with estimated savings in ms and KB
seoIssues, accessibilityIssues, bestPracticesIssues	failed checks in plain words
reportUrl	full Lighthouse HTML report (optional)

Example (shortened)

{
  "url": "https://www.idnes.cz/",
  "strategy": "mobile",
  "performanceScore": 39,
  "seoScore": 85,
  "lcpMs": 4755,
  "cls": 0,
  "tbtMs": 1340,
  "ratings": { "lcpMs": "poor", "cls": "good", "tbtMs": "poor" },
  "pageWeightKb": 4979,
  "opportunities": [
    { "id": "render-blocking-resources", "title": "Eliminate render-blocking resources", "savingsMs": 1481, "savingsKb": 0 },
    { "id": "unused-css-rules", "title": "Reduce unused CSS", "savingsMs": 320, "savingsKb": 69 }
  ],
  "seoIssues": ["Links are not crawlable", "Image elements do not have `[alt]` attributes"]
}

Use cases

• SEO agencies: audit all client sites or a competitor list in one run and put the scores into reports.
• E-shops: monitor product and category pages every week (Core Web Vitals affect Google rankings and conversions).
• Lead generation: find websites with poor speed scores and offer them your services.
• Developers: check performance after every release with a scheduled run or via API.

How to use

1. Add URLs (one per line).
2. Choose Mobile, Desktop or Mobile + desktop.
3. Run and export as JSON, CSV or Excel, or connect via API, Zapier, Make or n8n.

Notes

• Audits run one after another so that measurements are not distorted, so expect roughly 20–60 seconds per audit.
• Lab scores vary a little from run to run, as with PageSpeed Insights.
• Only audit websites you are allowed to test. Pages behind a login are not supported.

Questions or ideas?

Open an issue on the Issues tab. Feature requests are welcome.

How to use it via API

You can run the Actor from the Apify Console, on a schedule, or from your own code. Get your API token in Apify Console → Settings → Integrations.

Python

from apify_client import ApifyClient

client = ApifyClient("<YOUR_API_TOKEN>")
run = client.actor("digitalni.produkty.pro.zivot/pagespeed-audit").call(run_input={
    "urls": [
        "https://apify.com",
        "https://example.com"
    ]
})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

JavaScript / Node.js

import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: '<YOUR_API_TOKEN>' });
const run = await client.actor('digitalni.produkty.pro.zivot/pagespeed-audit').call({
    "urls": [
        "https://apify.com",
        "https://example.com"
    ]
});
const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(items);

Integrations and AI agents

• Export results as JSON, CSV, Excel, XML or HTML, or open them directly in Google Sheets.
• Connect to Make, Zapier, n8n, Slack, Google Drive, Airbyte or any webhook to get Lighthouse / PageSpeed audits for a list of websites into your workflow automatically.
• Use it from AI agents and LLM apps (Claude, ChatGPT, Cursor, LangChain…) through the Apify MCP server: the agent can call this Actor as a tool.
• Schedule runs (hourly, daily, weekly) to keep data fresh without any code.

FAQ

How much does it cost? $0.025 per audited URL and device. Auditing 40 client sites on mobile costs $1.

Do I need a Google PageSpeed API key? No. Lighthouse runs inside the Actor, so there are no API keys or quotas.

Can I track Core Web Vitals over time? Yes. Schedule the Actor weekly and send results to Google Sheets or your dashboard to see trends in LCP, CLS and TBT.

More tools from the same developer

All tools with code examples: github.com/Phenixik/apify-actors

• Sitemap URL Extractor: every URL from a website's sitemaps
• Broken Link Checker: find 404s and dead links on your site
• Website Screenshot: full-page, mobile and PDF screenshots
• Domain WHOIS & DNS Lookup: expiry, DNS, SPF/DMARC and SSL for many domains
• PDF Text Extractor: text, Markdown and RAG chunks from PDFs
• AI Image Upscaler: 4x Real-ESRGAN upscaling, no GPU
• RSS Feed Reader & Monitor: only-new-items feed monitoring
• ATS Jobs: jobs from Greenhouse, Lever, Ashby & more
• App Store Reviews: iOS reviews from 50+ countries