Increase PageSpeed Insights  score with 15 Google rating factors to improve your website rankings. Thereby helping you to increase your ranking in the process of SEO top Google search. Is your page loading speed fast, mobile-friendly and desktop-friendly?

Increase PageSpeed ​​Insights score with 15 Google rating factors

If you don’t know how your site scores and speed Don’t worry, Google provides a free analytics tool for you to check your website. Google has also stated that: page load speed on mobile devices and on computers is a factor affecting page quality and website rankings. Google will prioritize pages with fast page load speed over those with slow page load speed. Focus on more user experience.

So, what is Google PageSpeed ​​Insights?

PageSpeed ​​Insights is a tool developed by the Google team. This toolkit helps to analyze the content of a web page and then generate suggestions to increase the speed of that page. Administrators rely on Google’s recommended Web performance methods to make appropriate adjustments to make pages load faster and more user-friendly.


The PageSpeed ​​Insights tool will have a link box for you to insert your website URL. Then you click test, you wait for google to analyze for about 60 seconds. It will then display the current status of your site. Accompanied by Google’s editing suggestions. You can refer below.

You can see more documentation on PageSpeed ​​Insights here.

Evaluation criteria of increasing PageSpeed ​​Insights score

  • Avoid using redirects on landing pages.
  • Enable the function of compressing data sent to the browser.
  • Improved server response time.
  • Improved browser cache.
  • Compress CSS and Javascript resources on the website.
  • Perform image size reduction with compression.
  • Optimize the insertion of CSS fills into the website.
  • Set the priority order of content in your website.
  • Unblock Javascript and CSS on page load.
  • Take advantage of the asynchronous property.
Increase PageSpeed ​​Insights score with 15 Google rating factors

This PageSpeed ​​Insights scoring tool has a deep sense of community when it comes to sharing the research results of Google experts to make websites faster and provide a better user experience. Not to mention, you can also understand these website scoring standards more easily as well as know the factors that affect the increase of PageSpeed ​​Insights score, making Google more satisfied with the website. Since then, the search rankings thanks to natural SEO have also been significantly improved, increasing the ability to compete with rival websites.

Increase PageSpeed ​​Insights score with suggestions from Google to optimize performance

Besides website assessment, this Google PageSpeed ​​Insights tool also supports how to optimize website performance based on current reality. After displaying the scores and results, below there will be suggestions from Google experts to help improve the website score higher. That means your website will be significantly optimized.

How do 15 factors that increase PageSpeed ​​Insights score affect the Website?

According to research from 2017 when Google PageSpeed ​​Insight checked, about 70% of websites take about 7 seconds to load on mobile devices. For mobile users: intuitively, 7 seconds is quite a long time. Users expect your content to load within 2 seconds or 3 seconds, if this time interval is longer than 3 seconds, users will start to get impatient and frustrated. They are ready to exit the site and find a new website.


Although there are no exact figures to conclude, Google insists that only a small number of sites and queries will be affected. In fact, niche content can still achieve top rankings – even if it loads slower than average. If you are concerned about the performance of your website, use the Google PageSpeed ​​Insights tool  To test the load time and speed of individual pages in your website.

Why is website loading speed important?

A website that loads quickly creates a good first impression on customers. When users discover that your pages load fairly quickly, they will be more inclined to visit other pages of the same site to view information. This will generate more purchase rates.

Retain customers to visit the website

The fast page loading speed has saved customers from waiting. The mentality of each person wants to be quick and easy. So this will keep customers to stay to see your first content. They are even willing to see more information. Of course, you also have to invest more in quality content. You don’t have to copy somewhere and then put it up to wait for the sales results. Fast pages but not good content also do not achieve results.

Reduce server load

Customer actions and next page visits

A fast loading site is a very serviceable site. Ready to respond to the information that guests are looking for and need to see. The process of viewing information takes place quickly, they will tend to visit other pages on the website and have a higher likelihood of making a purchase (Higher sales conversion rate). 

Your Brand Reputation

Customer satisfaction will help you get appreciated and draw attention to your brand. Like you go to buy 1 cup of coffee at 2 stores, one side has a positive attitude, professional service, fast and attentive service. The other side is the opposite, slow staff, indifferent attitude, do you dare to come a second time or not? A high page load speed is a sign of a good service, helping to increase the relationship between the customer and you. They will keep coming back to use your services.

15 factors affecting the score increase PageSpeed ​​Insights

1. Server Response Time

You and I both know that speed is a huge factor in Google PageSpeed ​​Insights scores. We can understand that this is the time the server sends the HTML code of the web page to the user. This is a very important factor that not only affects the Google PageSpeed ​​score but also affects the SEO quality and user experience of the website. To check how much time it takes to generate the server’s HTML code, you can do the following:

  • Open Google Chrome and visit the website.
  • Then press Ctrl + Shift + I >>> open the Developer Tools tab.
  • Perform a page refresh for Developer Tools to analyze.
  • Finally click on the Network tab (as shown in Figure 1 below) and hover over the Timeline column to see details.


The Waiting line  (TTFB – Time To First Byte)  represents the time the server takes to generate the HTML code sent to the browser. According to Google’s standards, Server Response time must be less than 200ms (miliseconds), if your website is over 200 ms, you need to find an optimal way to have a lower index. Optimizing Server Response Time is a job that requires a lot of effort and brainpower, because it involves optimizing Database, optimizing source code, optimizing Web Server, upgrading Server hardware (CPU, RAM, HDD) …

2. Number of URL Redirects

Each URL redirection takes a long time for the browser to load the desired content. Therefore, unless required, you should refrain from using redirects to the new URL. This is also a factor affecting Google PageSpeed ​​Insights score.


3. Size of HTML code sent to Browser

Due to the weakness of TCP Slow Start, in order to achieve the fastest website rendering for users, the size of the HTML code should not exceed 14 KB (Kilobytes).

4. Compress the content before sending to the Browser (Enable Gzip Compression)

  • If you use Enable Compression, it will help a lot because Gzip supports reducing the content size with a compression algorithm. This is very important and useful because of the following benefits:
  • Make the website faster because it reduces the amount of transmission between Browser and Server.
  • Helps save bandwidth of the Internet system in general and server + users in particular.

Gzip works effectively with text content such as HTML, Javascript, CSS, JSON, XML, etc. and helps you to reduce the size of the content by up to 90%. For content types such as video, images, audio, etc., you should not use Gzip because it will consume a lot of CPU and RAM resources of the Server just to reduce 1% to 2% of the size of the content >>> no effective.

Increase PageSpeed ​​Insights score with 15 Google rating factors

5. Use upper cache

Most Browsers Sports cache to store Hitler Exchange Continue such as images (image), javascript (.js), CSS (.css), Video + Audio… In this way, when the Server sends an instruction to the Browser in the header to tell the Browser that this content will not change for a certain period of time, the Browser will not need to send a query to the Server to get this content, but will use the data already. cached memory.

Reduce server load

Using this way, the Server will offload a lot of unnecessary queries. Imagine that once a user views a page on your website, the browser will have to send an average of about 60 queries to get the necessary content such as images, .js, .css, videos, … For websites with a lot of content, more than 100 queries is normal) how effective is it to reduce redundant queries in this way?

Increase PageSpeed ​​Insights score with 15 Google rating factors

6. Minify Resources

  • Minify is a technique to reduce redundant data in HTML, CSS and Javascript code to minimize the size of redundant content including:
    Comment codes:
  • HTML : <!– … –>
  • CSS : /*…*/
  • Javascript : /*…*/ & //…
  • Spaces: tab, newline, 2 or more spaces (space bar, blank) in a row, etc.

From experience we have found that if you do Minify well, it will help reduce the size of the content by about 10% or more.

7. Image optimization

The images on the website will usually take up the majority of the total capacity of a web page. Therefore, you need to consider the use of optimized images on the website. If you do a good job of Optimize Images, the total size of the website will be significantly reduced. You can export image files of light size and good quality with image compression software. Currently, there are many free online image compression tools for mass use that you do not need to install on your computer.

8. Reduce the size of the above-the-fold content

Above-The-Fold (abbreviated as ATF) is the content that appears above the first screen of a website before the user scrolls down (scroll). So Above-The-Fold will be different on different devices depending on the device’s screen size (width + height).

According to Google’s recommendation, the content related to Above-The-Fold needs to be less than 14KB in size for the fastest display of website content.

9. Javascript Codes Cause Render-Blocking

In the process of rendering a web page, if the browser encounters a Javascript object, it will have to stop the rendering process to download this Javascript code and execute it until it is finished before continuing to render the next part of the HTML. This is the cause of your website’s slow presentation to users if you put the Javascript code at the top of the HTML, for example in the <head>…</head> section, close to the <body>…

Please refer to Remove Render-Blocking JavaScript according to Google’s instructions.

10. Plugins used in the website

Plugins help the Browser handle special content in the website such as Flash, Silverlight, Java, … . But most mobile devices do not support these plugins (Apple does not support the use of Flash on their devices), and according to information Avoid Plugins these plugins are the leading cause of problems. crashes, crashes, and security issues on browsers that support them.

Therefore, most popular browsers today restrict the use of plugins and your website will lose Google PageSpeed ​​score if you are using plugins. This is one of the factors that influence the big Google PageSpeed ​​Insights score.

11. Missing Viewport Configuration

Viewport is used to control how the web page displays on a mobile device. If you don’t configure Viewport, mobile devices will render the site as it does on the Desktop (PC), which will make your site very difficult to view on mobile devices.

12. Viewport configuration is not suitable for content

If you have configured the Viewport for the website, but the width of the content is not suitable for the Size Content to Viewport, it will make the user forced to scroll horizontally to see all your content.

On both desktop and mobile versions, users usually only scroll vertically but rarely horizontally, and when you force users to scroll horizontally or zoom out (zoom out) to viewing website content will make users uncomfortable (poor user experience).

13. The right size of interactive objects

This rule is what makes interactive objects such as buttons, links, or form fields, etc., of the right size (not too small) and the distance between them. not being too close makes it difficult for users to interact (tap) on touchscreen-enabled mobile devices.

If your website designs links or buttons that are too small or too close together, it will make it very difficult for users to click or may mistakenly press other objects when they use the touch screen, which will make Google PageSpeed ​​Insights score will be lower when calculating the mobile score.

14. Inappropriate font size

The problem occurs when you use a font size that is too small to make it difficult for users to read, especially on mobile devices. Not only in the PageSpeed ​​Insights scoring tool, but also on Googlec Search Console, it also reported an error that the text is too small. Affect users, from which you will be deducted points and likely not high indexed.

15. Remove unnecessary files

If there are unnecessary files (like images) or backends (like old blog drafts) that are not needed, remove them from your website. Your site will be smaller and more efficient, which in turn loads faster. Also, delete unused Plugins, change the image size compression accordingly. Avoid uploading unnecessarily heavy image files.


All of the above 15 factors affect a Website’s Google PageSpeed ​​Insights score. You can follow the instructions to analyze your site when testing on this tool. Once done, you will see your score increase significantly, obviously speed and experience must increase. Good luck with your installation!


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