Free Online Page Speed Test Tool

A page speed test runs Google Lighthouse against a URL and returns a 0-100 performance score plus the load timings that go into it.

This tool uses AI and sends your text to a secure API for processing. No data is stored after your session.

Instant results Secure AI processing No signup needed

Powered by the Google PageSpeed Insights API. Results reflect a single lab run and may differ from field data.

How to Use This Tool

  1. Pick Mobile or Desktop — mobile is throttled and usually scores lower.
  2. Type or paste the full URL you want to test into the box.
  3. Select Test speed and wait a few seconds for Lighthouse to finish.
  4. Read the colored 0-100 dial: green is good, orange needs work, red is poor.
  5. Scan the metric cards (LCP, TBT, CLS and more) to find what is dragging the score down.

What Is a Page Speed Test?

Page speed describes how quickly a page loads and becomes usable. This test sends your URL to Google's Lighthouse engine, which loads the page in a controlled lab environment and grades it from 0 to 100 — roughly 90+ is good, 50-89 needs work and below 50 is poor. The headline score is a weighted blend of lab metrics, not a single timing.

The metrics behind it are First Contentful Paint (the first text or image), Largest Contentful Paint (the main content), Total Blocking Time (how long the main thread is frozen), Cumulative Layout Shift (how much the layout jumps) and Speed Index (how fast content appears). Mobile is throttled to mimic a mid-tier phone on a slow connection, so a page almost always scores lower on mobile — and since Google indexes mobile-first, that result usually matters most.

This tool is powered by the third-party Google PageSpeed Insights API and must be configured with a key by the site owner; until then it shows a setup notice. Each run is one lab measurement, a fast diagnostic.

Frequently Asked Questions

What is a good performance score?
Lighthouse scores run 0-100. Roughly 90+ is good (green), 50-89 needs work (orange) and under 50 is poor (red). The score is a weighted blend of lab metrics like LCP and Total Blocking Time.
Why test mobile and desktop separately?
Mobile is throttled to simulate a mid-tier phone on a slow network, so the same page almost always scores lower on mobile. Google's index is mobile-first, so the mobile result usually matters most.
Why is this tool not working?
It relies on the Google PageSpeed Insights API. If the site owner has not set the required API key in the environment, the tool shows a configuration notice instead of results.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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