Toolbox Max / Features / Page Speed

Pro

Page Speed

Measure the open page's core speed metrics and see which resources weigh the most.

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Available in: Toolbox Max for Developers

How it works

Three steps

  1. Open a page and run the measurement.

  2. Read LCP, CLS, FCP and TTFB with their ratings.

  3. Check the largest files and the number of resources.

What you get

  • LCP, CLS, FCP and TTFB with ratings
  • DOM ready and full load times
  • Largest files and resource breakdown
  • DOM element count

When it helps

  • A quick diagnosis of a slow page
  • Verifying the effect of an optimization
  • Talking points for client conversations

Pro version

This tool is available in Pro.

See pricing

Privacy and permissions

Measuring runs locally; data never leaves your browser.

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