Bulk PageSpeed & Core Web Vitals Checker — Google Lighthouse, No API Key

Test hundreds of pages at once with Google Lighthouse — the same engine behind PageSpeed Insights — and get Performance, SEO, Accessibility and Best-Practices scores, Core Web Vitals (LCP, CLS, TBT/INP), FCP, Speed Index, TTFB, page weight, request count and the top fixes for every URL, on mobile, desktop or both.

No API key required: Lighthouse runs right inside the Actor. Optionally add your free Google PageSpeed Insights API key to also get real-user Chrome UX Report (CrUX) field data — the data Google uses for rankings — plus faster parallel audits.

Why use it

• ✅ Works out of the box — no Google Cloud setup needed
• ✅ Bulk: audit a whole sitemap, a client list, or competitors in one run
• ✅ Every metric as clean numbers → Google Sheets, Looker Studio, Airtable, Slack alerts
• ✅ Top 10 performance opportunities (estimated savings in ms/bytes) and failed SEO checks per page
• ✅ Real-user Core Web Vitals pass/fail (with your free API key)
• ✅ Schedule weekly to track speed over time and catch regressions after deploys
• ✅ Failed pages (DNS errors, timeouts) are reported clearly and are not charged

Who uses it

• SEO agencies & freelancers — audit prospect sites in bulk and send reports that win clients
• Developers & site owners — monitor speed after every release
• E-commerce teams — find slow product and category pages
• Lead generation — find businesses with slow sites that need help

Input examples

Quick bulk audit (no key)

{ "urls": ["https://www.example.com", "https://www.allbirds.com"], "strategy": "mobile" }

Mobile + desktop with real-user Core Web Vitals

{ "urls": ["https://www.example.com/", "https://www.example.com/pricing"], "strategy": "both", "engine": "psi", "googleApiKey": "YOUR_FREE_KEY" }

Output example

{
  "url": "https://www.allbirds.com/",
  "strategy": "mobile",
  "engine": "local",
  "performanceScore": 28,
  "accessibilityScore": 100,
  "bestPracticesScore": 79,
  "seoScore": 100,
  "fcpMs": 10662,
  "lcpMs": 34615,
  "tbtMs": 1857,
  "cls": 0.008,
  "speedIndexMs": 14396,
  "ttfbMs": 10,
  "totalByteWeight": 7892248,
  "requestCount": 473,
  "opportunities": [
    {"id": "unused-javascript", "title": "Reduce unused JavaScript", "savingsMs": 6010, "savingsBytes": 922888}
  ],
  "failedSeoAudits": [],
  "coreWebVitalsPassed": null,
  "lighthouseVersion": "12.8.2",
  "auditDurationSec": 23.1,
  "error": null,
  "auditedAt": "2026-11-01T16:08:48.599Z"
}

With an API key you also get fieldLcpP75Ms, fieldInpP75Ms, fieldClsP75, fieldFcpP75Ms, fieldTtfbP75Ms, their FAST/AVERAGE/SLOW categories, fieldDataScope (url or origin) and coreWebVitalsPassed.

Get a free Google API key (optional, 2 minutes)

1. Open Google Cloud Console → APIs & Services → Library → enable PageSpeed Insights API.
2. APIs & Services → Credentials → Create credentials → API key.
3. Paste it into Google PageSpeed Insights API key. Google's free quota is about 25,000 audits per day.

Notes

• Lab scores vary by a few points between runs. That's normal for Lighthouse.
• Built-in Lighthouse audits one page at a time for consistent results (about 6–30 s per page). The API engine runs up to 8 in parallel.
• By default, URLs disallowed by robots.txt are skipped. Turn this off for sites you own.

How much does it cost?

$0.012 per successful audit (+ $0.00005 per run start). Failed audits are free. You set a maximum charge per run, so you never pay more than you allow. Apify's free plan includes monthly credit, enough to try this Actor at no cost.

FAQ

Do I need a Google API key?

No. By default the Actor runs Lighthouse itself. Add your free Google key to also get real-user (CrUX) Core Web Vitals.

Mobile or desktop?

Both. Choose the strategy in the input.

Are failed audits charged?

No. Pages that time out or error are saved with the error for free.

Is it legal?

It only reads public data that the site or platform publishes openly (no login, no bypassing). You are responsible for using the data in line with applicable laws such as GDPR.

Something broke or a field is missing?

Open an issue on the Issues tab; we fix reported problems fast.

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