Page Speed Test

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Bulk Page Speed Test: How Fast Is My Website?

With the Bulk Page Speed Test, you can automatically determine the speed and Core Web Vitals for your site. A high page speed not only ensures more satisfied visitors but has also become a ranking factor on Google. With our tool, you can determine which subpages are slow on your site or compare it with those of your competitors.

How to Use

You can use our Page Speed Test in three different ways:

  • Crawl your website
    You set the start URL and we crawl the web page to find more URLs. Crawling is limited to 60 seconds and 500 URLs.

  • URL list
    You send a list of URLs for which we then determine the page speed.

  • Keyword
    You define a keyword and we determine the Top 50 results on Google. Using this, we assess the page speed for each URL.

You can also select whether page speed should be determined for mobile devices or desktop computers.


The metrics used correspond to those of Google PageSpeed Insights or the Lighthouse Performance-Tool. Below, we'll introduce the different criteria used:



This rates website speed from 0-100. Values above 90 are considered fast, those between 50 and 90 are average, whereas a speed below 50 is considered slow. Click here for more information.


Time To First Byte (TTFB)

Time To First Byte indicates how long a browser must wait to receive the first byte of a page. TTFB basically shows how long the server needs to deliver an answer. This value should be less than 600ms. Click here for more information.


First Contentful Paint (FCP)

The First Contentful Paint specifies the time at which the browser displays a part of the website for the first time. This is an important milestone as it shows the user that the website is actually loading. Click here for more information.


Largest Contentful Paint (LCP)

The Largest Contentful Paint indicates the time when the browser rendered the largest visible element. This is the point in time by which the main content of a page is most likely to be loaded. Click here for more information.


Cumulative Layout Shift (CLS)

Cumulative Layout Shift measures the sum of all layout shifts that occur over a page's lifetime. A layout shift happens whenever a visible element changes position from one frame to the next. Click here for more information.


Total Blocking Time (TBT) / First Input Delay

The Total Blocking Time measures the time after the First Contentful Paint during which the web page is blocked and therefore does not respond to user input. The Total Blocking Time is very similar to the First Input Delay, but in contrast, it can be determined automatically. Click here for more information.



This indicates the combined size of all site resources (HTML, JS, images, etc.). The smaller this is, the less data needs to be transferred. Size has a significant impact on the total loading time. Click here for more information.


How reliable is the data?'s Page Speed Test uses the same data as Google PageSpeed Insights. Therefore, its results are 100% comparable.

What limits does the tool have?

In order to prevent abuse, we currently limit the crawling time to 60s or 500 URLs, with the number of URLs per keyword limited to 50. We reserve the right to adjust these limits at any time.

I found an error or have a suggestion for improvement.

We greatly appreciate feedback or suggestions for new features. To get in contact, simply send an e-mail to

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Janis von Bleichert studied business informatics at the TU Munich and computer science at the TU Berlin, Germany. He has been self-employed since 2006 and is the founder of He writes about hosting, software and IT security.
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