Generate web performance reports (on demand) for any web page.
Speed Analysis Lab web performance tests are conducted using a Google Chrome web browser, within highly realistic and customizable contexts.
How to configure a basic web performance test
1. Go to ‘Speed Analysis’ and select the ‘Analyze’ tab.
2. On the ‘Single page’ tab you can choose to analyze one of your recommended pages (based on your Real User Monitoring (RUM) traffic), or analyze a different page by entering the URL.
Analyzing recommended pages
These pages are recommended for analysis, based on your RUM traffic. They also display the total views and Largest Contentful Paint (LCP) results to help you prioritize. Simply click ‘Select’ to run the test and generate the performance report.
Analyzing a single page
Use this section to analyze any other page, by entering its URL.
1. Enter the URL of the page you want to analyze.
- Tip: Take care when typing the URL as it may impact your results. E.g. If you want to test 'https://www.example.com' type the full URL (including https://)
2. Choose a device (desktop or mobile) to emulate for the test.
3. Choose the location to test your website from where your users are browsing.
4. Choose one of the bandwidth options, or enter your own custom value (for downstream and upstream bandwidth).
5. Select 'Analyze' to run the test and generate the performance report.
Mobile/Desktop web performance testing
When ‘Mobile' is selected, it’s important to note the following:
- Our tool is based on the emulation features of Chrome Dev tools.
- The resolution for Desktop is 1366x768 (DPR: 1) and for Mobile it’s 2560x1440 (DPR: 4).
- The default bandwidth will also be tuned.
- It will impact the results of your test, including the list of best practices to be applied.
Selecting bandwidth
Bandwidth can be used to better understand the Blocking Time.
As an example, you can choose to analyze the page with no latency and a very high bandwidth, so that you eliminate all network-related issues, putting the focus on CPU limitations. This can be useful to determine priorities.
It’s worth noting that latency is injected into the network exchanges between our browser and the contacted web servers. It is added to the "natural" latency that is very limited within our infrastructure, as our test probes are based in data centers.
Using the advanced settings
Click the ‘Advanced settings’ dropdown to access an additional range of settings that can be used within our standalone analyses, as well as our comparison tools and our monitoring features.
Visit our guide on advanced test settings to learn more about configuring each.
How to access the performance report
The performance report (generated by your test) can be viewed from the Dashboard or Reports tab.
Learn how to read and analyze the web performance report.
FAQs
Can I access a custom device that I created and saved previously?
Yes, you can access previously saved custom devices from the ‘Custom Devices’ section of the dropdown list.
I previously used the default mobile devices, where can I access them?
The former default mobile devices that were used in a saved configuration, monitoring or scenario have been moved into a Custom Devices section in the dropdown.