Measure website load time with PageSpeed Insights

How do you measure your website's load time for free?

Open Google's PageSpeed Insights, enter the address of your home page and click "Analyze". After about a minute you see how fast your page loads on a phone and on a computer. The tool is free, you need no account and no technical knowledge. Ideally, measure several pages: home page, a service page and the contact page.

In the background, PageSpeed Insights uses Lighthouse, a testing program from Google. It loads your page in a simulated environment, rates performance, accessibility, best practices and search engine friendliness, and gives you a list of concrete improvements.

Why does load time matter for your business?

People who search for you on their phone don't like to wait. According to StatCounter, almost 60 percent of page views in Germany came from smartphones in September 2026. So your website has to appear quickly above all on a phone on a mobile network, not just in the office on good Wi-Fi.

Google's documentation says that good Core Web Vitals are recommended for success in Search. They match what the ranking systems aim to reward. But they are not a single switch for position 1: a slow business with very good content can still rank at the top.

What do LCP, INP and CLS mean?

The Core Web Vitals are three measurements Google uses to describe the page experience. A page passes when at least 75 percent of visits reach the respective target value.

How do you read the result correctly?

PageSpeed Insights shows two kinds of data. The field data comes from real visitors who use Chrome (Chrome User Experience Report). It covers the past 28 days and shows how your page is really experienced. For small businesses with few visitors it is often missing, and then the tool shows only the second kind.

The lab data comes from a Lighthouse test run. It is good for finding errors and comparing changes, but it doesn't reflect every device and every network. The score from 0 to 100 counts as good from 90, as needs improvement from 50 to 89, and as poor below that.

How do you measure, step by step?

1. Open the page

   Go to pagespeed.web.dev and enter the full address, for example https://www.your-business.com.

2. Analyze

   Click the button to analyze and wait until the result appears.

3. Check the mobile tab

   Note LCP, INP, CLS and the score for mobile. Take a screenshot with the date.

4. Test more pages

   Repeat this for a service page and the contact page. The home page alone tells you little.

5. Read the recommendations

   Under "Diagnostics" you find the biggest slowdowns. Pass the list on to the person who looks after your website.

6. Measure again after changes

   Test again after every change. Swings of a few points are normal, so measure two or three times.

What usually makes small business websites slow?

Most often it is the biggest image. The LCP is often a header image, and if it was uploaded as a huge file, is loaded later by a script or deliberately appears with a delay, the time goes up. Google's guide also names redirects, a slow server response and large stylesheets or scripts that block the page from being drawn.

Google also describes that a high server response time can make an LCP of 2.5 seconds challenging or even impossible. A cheap, overloaded hosting plan can therefore show up in exactly this value.

Which improvements can you start yourself?

• Shrink and compress photos before uploading them
• Use images only in the size at which they are displayed
• Don't let the header image load lazily
• Remove plug-ins, fonts and scripts you don't need
• Look for a hosting plan with a fast server response
• Measure again after every change

Whether you can do this yourself depends on your system. With many site builders and older websites, deeper changes are not possible. Then the measurement is above all evidence you can take to your agency or service provider.

When is a rebuild worth more than fine-tuning?

If the mobile values stay poor despite smaller images, the cause is often the foundation: heavy templates, outdated extensions, slow hosting. Fine-tuning then achieves little. You can find more signs in the article on signs that a relaunch is due. If you rebuild, make sure your search rankings are kept, as described in the relaunch checklist.

Weblift rebuilds outdated websites of small businesses. You see the finished preview before you order. The launch price for the first 100 websites is 399 EUR net one-time (regularly 999 EUR net), 3 months of hosting are included, after that it costs 19 EUR net per month. Details are on the pricing page.