How to check your website loading speed and responsiveness 10 free tools
Published :2021-04-21 | Blog
How to check your website loading speed and responsiveness 10 free tools

Content is a king when it's delivered to its target audience. If the user left because of the slow loading of the site or simply could not read the text that was displayed poorly - alas. Then  most likely he will go further and find your competitor.

We will tell you what tools you can use to check the website loading speed and its responsiveness.


5 services to check website loading speed


Fact: Loading speed affects both search rankings and conversions. The first statement is from Google's Webmaster Blog, the second is from Akamai's research.

Conclusion: you need to check the website loading speed and do everything necessary to increase it. Even 100 milliseconds decides.


Отрывок из исследования Akamai: замедление скорости загрузки на 100 миллисекунд привело к снижению конверсии на 7 %


A snippet from Akamai Research: A 100 millisecond slowdown in loading speed resulted in a 7% drop in conversions.

List of tools for analyzing website loading speed:


1. PageSpeed Insights

PageSpeed Insights from Google evaluates the effectiveness of pages for mobile and desktop, and gives recommendations for site optimization.



Так работает PageSpeed Insights


This is how PageSpeed ​​Insights works

Important: the score from 1 to 100 depends not only on the download speed. It is an internal service metric based on a number of rules. PageSpeed ​​Insights recommendations should not be perceived as calls to action, as the developers themselves warn about.

In general, it's like with Glavred - you can't blindly adjust to the maximum number of points, you have to think with your head.


2. Pingdom Tools


Pingdom Tools shows Google PageSpeed ​​Insights score, load time, number of requests, and page size. The summary also shows the result of comparison with other tested sites.

By scrolling through the report below, you can also find specific items affecting download speed.


Фрагмент отчета Pingdom Tools


Fragment of the Pingdom Tools report

Unfortunately, you won't be able to see how quickly the page loads in some countries. You can only select Sweden, USA or Australia for the test.


3. WebPageTest


The service is not very good in terms of design, but it gives more choice in terms of locations - there are over 40 of them (however, the Russian Federation is not on the list again). Plus, you can choose different browsers and even devices if you run the test from Dallas.


Вот так выглядит WebPageTest


This is what the WebPageTest looks like

You can also turn on a slideshow or video in the service to visually evaluate how the page is loading. And finally, WebPageTest can compare the speed of several sites: add the URL of competitors and see how they are doing.


4. GTmetrix

Another service for checking the website loading speed. Advantages over WebPageTest:

  • Nice interface.
  • Possibility to choose the connection speed.
  • Additional rating from Yahoo - useful for overseas promotion.
  • There is a PDF export of the report.
  • You can set up regular monitoring of the page. Free - no more than 1 time per day from a server in Vancouver.

Disadvantages: few browsers, it is impossible to choose a mobile device for the test, only 7 locations are available.


Первый экран отчета GTmetrix


First screen of the GTmetrix report

GTmetrix also has a paid version - for those who need to check more, more often and in more detail.


5. Sitespeed

Sitespeed allows you to check how a site is loading from multiple points at once.


Сравнение скоростей загрузки сайта от Sitespeed


Comparison of site loading speeds from Sitespeed.

If you want to help the project, the option is to become a sponsor: add your server.

You can also use Google Analytics and Yandex.Metrica to check your site. Both systems have reports on the speed (time) of loading the site (pages).


Так выглядит отчет «Метрики»


5 services to check the site for responsiveness


Adaptability, cross-browser compatibility, cross-platform compatibility are important components of a website's usability.

So, according to CoMagic data, mobile is almost equal to the desktop in terms of the number of conversions.


Из отчета Comagic


From the Comagic report

If you have a strong belief that your site is dominated by PC customers, you should pay attention to the post-click. A study by Criteo found that 20% of desktop sales are made after a click from a mobile device.



Фрагмент отчета Criteo


Fragment of the Criteo report

Moral: Respect equally for users across devices, screens, OS and browsers. Then there will be traffic and conversions. We have been making landing pages for over 5 years. We achieve high conversion by any means.


List of tools for testing adaptability / cross-browser compatibility / cross-platform compatibility:


1. Mobile-Friendy Test

A simple Google service that lets you know if a page is optimized for mobile devices or not. Plus, you can see the problems that arose while downloading it.

No interactivity or choice of resolution - just a screenshot of the first screen.



Так работает Mobile-Friendly Test от Google


This is how Google's Mobile-Friendly Test works


By the way, Yandex.Webmaster has a similar tool - however, there you can only check the pages of your own site.



2. Browserling

Browserling is a cross-browser testing tool. How to start:

  • Select the required Android / Windows version.
  • Specify the browser along with the version.
  • Click “Test now”.

A full-fledged emulator opens: you can follow links, open different sites.

Вот так вот работает проверка кроссбраузерности в Browserling


This is how the cross-browser check in Browserling works.


Disadvantage of the service: the free version is limited in terms of time, of use and the number of available browsers. Despite the fact that there are so few of them.


3. Adaptivator

Adaptivator is a free service for testing adaptability. Gives an estimate and recommendations for optimization - warns if you need to increase the size of active elements, adjust the viewport or change the font.

Adaptivator показывает, как сайт выглядит на iPhone


Adaptivator shows how the site looks on iPhone


Problem: trying to study how sites look on different devices - Adaptivator often refers to the fact that resource owners prohibit this. However, other services calmly open the same sites. 


4. Screenfly

Screenfly is as free as Adaptivator, but more powerful. You can choose one of 30 options for screen sizes or - register the height and width yourself.

Так работает Screenfly


This is how Screenfly works

To see all the elements of the page, you also need to enable scrolling - click on the "Allow scrolling" button in the menu.


5. I love adaptive

I love adaptive is a handy tool for checking adaptability and cross-platform compatibility.

In the panel on the right, you can select the desired combination of device and operating systems. If necessary - also rotate the screen and adjust the zoom.


Проверка адаптивности, кроссдевайсности, кроссплатформенности в I love adaptive


Checking adaptability, cross-device, cross-platform in I love adaptive.


Disadvantage: you cannot select an operating system for PCs and laptops. Also, to work with some sites, it is necessary to install the extension on Chrome.


To study how users of different devices, operating systems and browsers interact with your site - use also the corresponding Analytics and Metrics reports.


Пример: отчет по браузерам в Google Analytics


Example: Google Analytics Browser Report

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