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Page Speed Test

Performance, SEO & Web Vitals

Run a Lighthouse-style audit on any URL for performance, SEO, accessibility, and best practices scores plus all Core Web Vitals (LCP, CLS, INP, TTFB, FCP, TBT, TTI, Speed Index). Includes real-user CrUX data when available and a prioritized list of issues ranked by impact.

1 skillv0.03
Audit URL

Run a Lighthouse-style audit for a URL and return category scores, Core Web Vitals metrics, and prioritized issues that hurt ranking or user experience.

Returns: Lighthouse-style category scores, performance metrics, and prioritized issues with a resilient fallback mode
Parameters
url *stringURL to audit
strategystringAudit strategy to emulate mobile or desktop rendering
categoriesarrayOptional categories to focus on (performance, seo, best-practices, accessibility, pwa)
timeout_msnumberMaximum audit duration in milliseconds (5000-60000)
Example
Audit the example.com homepage for mobile SEO/performance
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{
  "tool": "page-speed",
  "skill": "audit_url",
  "input": {
    "url": "https://example.com",
    "strategy": "mobile"
  }
}' \
  https://api.toolrouter.com/v1/tools/call
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v0.032026-03-24
  • Renamed from lighthouse-audit to page-speed
  • Added TTFB, TTI lab metrics and INP, TTFB CrUX percentiles for complete Core Web Vitals coverage
v0.022026-03-22
  • Added subtitle, expanded description, and agent instructions
v0.012026-03-20
  • Initial release

Quick Start

MCP (Claude Code)
claude mcp add --transport stdio \
  --env TOOLROUTER_API_KEY=YOUR_API_KEY \
  toolrouter -- npx -y toolrouter-mcp
REST API
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
  -d '{"tool":"page-speed","skill":"audit_url","input":{}}' \
  https://api.toolrouter.com/v1/tools/call

Frequently Asked Questions

What does the score include?

It covers performance, SEO, accessibility, best practices, and the full Core Web Vitals set.

Does it use real-user data or only lab data?

It includes CrUX data when that is available, along with a Lighthouse-style audit.

Can it help explain slow pages, not just measure them?

Yes. The findings are prioritized by impact, so you can see what is most likely to improve the page first.

Is this only for speed?

No. It also checks SEO and accessibility in the same run, which makes it more useful than a pure speed score.