Website Speed Test

A slow page loses visitors before they read a word, and Google uses page experience, measured by the Core Web Vitals, as one of its ranking signals. This test runs Google PageSpeed Insights on your page, on a mobile phone and a desktop at the same time, and shows the scores, how real Chrome users experienced the page over the last 28 days, and which problems cost the most time.

How to use Website Speed Test

1. Enter the full address of the page, such as https://example.com/pricing. Test your most visited pages, not only the homepage.
2. Click Test speed and wait 20 to 60 seconds while Google loads the page on a simulated phone and a desktop.
3. Switch between the Mobile and Desktop tabs. Start with the real-user Core Web Vitals, then look at the lab scores.
4. Work through What to fix first. The items are sorted by how much time they could save; open one to see what it means and how to fix it.

When it comes in handy

• Finding out why a page feels slow on phones.
• Checking Core Web Vitals (LCP, INP and CLS) before and after a redesign, a new theme or a new plugin.
• Comparing your page speed with a competitor's.

Frequently asked questions

Why is the mobile score lower than the desktop score?

The mobile test simulates a mid-range phone on a slow 4G connection, so it is much stricter. Most visitors use phones, and Google indexes the mobile version of your pages, so the mobile result is the one to improve first.

What is the difference between real-user data and the lab test?

Real-user data comes from the Chrome UX Report: how actual Chrome visitors experienced the page over the last 28 days. The lab test is one controlled run. Google uses the real-user data for its page experience signals; the lab test helps you find the cause of a problem and check a fix straight away.

Why does my score change every time I test?

Lab tests depend on network conditions, server load and third-party scripts such as ads and analytics, so a few points of movement between runs is normal. Look at the trend over several tests rather than a single number.

What are good Core Web Vitals?

Google counts a page as good when its Largest Contentful Paint (LCP) is 2.5 seconds or less, its Interaction to Next Paint (INP) is 200 milliseconds or less and its Cumulative Layout Shift (CLS) is 0.1 or less, measured at the 75th percentile of visits.