webpagetest.org - speed index and load time results
Posted: Mon Dec 09, 2024 8:39 am
At the top of the page you have the ratings for the most important optimizations that apply to each project. In particular you have the presence or absence of Keep Alive , First Byte Time (back-end processing), image compression, browser cache and Gzip compression . Without forgetting the use of the CDN.
This summary data, designed to give a first taste of the analysis, is completed with the table that gives more information on particularly technical steps such as the first contentful paint and more:
Load Time.
First Byte.
Start Render.
Speed Index.
Last Painted Hero.
First CPU Idle.
Then you find three tests with related results that include waterfall , screenshots of the page after uploading and even the video showing how the upload happens, indicating the time elapsed.
After WebPageTest verification
Once you have completed your web page study work with the definition of the data to be studied, you can delve deeper with two dedicated tools. The first ( webspeedtest.cloudinary.com ) is dedicated to the analysis of images to verify if you are doing your best – in terms of image size, format, quality – to make the visual adequate to the needs of a streamlined loading.
Learn more: How to optimize images
map of nodes requested third party site
The second one, instead, checks the web page request nodes to quickly identify third-party elements on your site , where the bytes and loading times are coming from ( requestmap.herokuapp.com ).
Strengths and weaknesses of the tool
As with all tools designed to optimize web pages, there are russia phone numbers
elements that can determine advantages and disadvantages for those who work. What are the pros and cons of WebPageTest?
Let's start with the advantages
The first plus point for those who decide to use this tool in the work of optimizing web pages: with WebPageTest you can customize the analysis and choose different parameters , a condition difficult to obtain from other tools without a premium profile (therefore paid). With WebPageTest you can decide:
Area from which to perform the speed test.
Browser for connection simulation.
Connection type (e.g. 4G or 3G).
Device from which to navigate during the test.
Important to simulate optimized navigation, and related loading times, is the ability to set a real mobile network with a related telephone operator. Furthermore, as already indicated, you can obtain filmstrips and videos to see the browser rendering the contents of the page. Why is this function important? I explain it in this article with tips for measuring and improving the performance of a website .
“ With videos you can also compare the result obtained from a different geographical location, for example by first choosing to simulate a visit made in the place closest to your hosting and then one on the other side of the world”.
Weaknesses of WebPageTest
Of course, there are also some negative aspects for those who decide to rely only on this tool to monitor the loading times of web pages . In reality, we are talking mainly about poorly cared for and lacking aspects and not negative notes. For example, WebPageTest reports the lack of CDN as an error.
But if you don't have a multilingual site you can ignore this point. It also highlights the absence of static cache for external resources ( Google Analytics , Tag Manager , Iubenda, etc.) that you can't manage directly .
Links and documents for further information
Official documentation of this tool
Run Synthetic Web Performance Tests
Internal forum with questions and answers
This summary data, designed to give a first taste of the analysis, is completed with the table that gives more information on particularly technical steps such as the first contentful paint and more:
Load Time.
First Byte.
Start Render.
Speed Index.
Last Painted Hero.
First CPU Idle.
Then you find three tests with related results that include waterfall , screenshots of the page after uploading and even the video showing how the upload happens, indicating the time elapsed.
After WebPageTest verification
Once you have completed your web page study work with the definition of the data to be studied, you can delve deeper with two dedicated tools. The first ( webspeedtest.cloudinary.com ) is dedicated to the analysis of images to verify if you are doing your best – in terms of image size, format, quality – to make the visual adequate to the needs of a streamlined loading.
Learn more: How to optimize images
map of nodes requested third party site
The second one, instead, checks the web page request nodes to quickly identify third-party elements on your site , where the bytes and loading times are coming from ( requestmap.herokuapp.com ).
Strengths and weaknesses of the tool
As with all tools designed to optimize web pages, there are russia phone numbers
elements that can determine advantages and disadvantages for those who work. What are the pros and cons of WebPageTest?
Let's start with the advantages
The first plus point for those who decide to use this tool in the work of optimizing web pages: with WebPageTest you can customize the analysis and choose different parameters , a condition difficult to obtain from other tools without a premium profile (therefore paid). With WebPageTest you can decide:
Area from which to perform the speed test.
Browser for connection simulation.
Connection type (e.g. 4G or 3G).
Device from which to navigate during the test.
Important to simulate optimized navigation, and related loading times, is the ability to set a real mobile network with a related telephone operator. Furthermore, as already indicated, you can obtain filmstrips and videos to see the browser rendering the contents of the page. Why is this function important? I explain it in this article with tips for measuring and improving the performance of a website .
“ With videos you can also compare the result obtained from a different geographical location, for example by first choosing to simulate a visit made in the place closest to your hosting and then one on the other side of the world”.
Weaknesses of WebPageTest
Of course, there are also some negative aspects for those who decide to rely only on this tool to monitor the loading times of web pages . In reality, we are talking mainly about poorly cared for and lacking aspects and not negative notes. For example, WebPageTest reports the lack of CDN as an error.
But if you don't have a multilingual site you can ignore this point. It also highlights the absence of static cache for external resources ( Google Analytics , Tag Manager , Iubenda, etc.) that you can't manage directly .
Links and documents for further information
Official documentation of this tool
Run Synthetic Web Performance Tests
Internal forum with questions and answers