Contents
- I. Website speed mobile
- II. How to mobile version website speed test
- III. How to speed up website for mobile
- 1. Properly size images
- 2. Defer unused CSS
- 3. Ensure text remains visible during webfont load
- 4. Serve images in next-gen formats
- 5. Avoid enormous network payloads
- 6. Serve static assets with an efficient cache policy
- 7. Avoid an excessive DOM size
- 8. Reduce JavaScript execution time
- 9. Defer offscreen images
- 10. Minify CSS
- 11. Eliminate render-blocking resources
- 12. Serve static assets with an efficient cache policy
Don’t let speed on mobile website affect your business. Read this article now to know: How to mobile version website speed test? How to speed up website for mobile?
I. Website speed mobile
In 2015, there were more mobile searches than desktop searches for the first time. And this number is increasing as mobile phones are increasingly popular in modern society.

Foreseeing this trend, since December 2017, Google has started ranking all search results based on the mobile version of websites.
This means mobile user experience will now play an important role in search ranking, even in desktop search results. It poses a huge challenge for developers. How to well meet the needs of customers to use the website on mobile devices?

Among the factors that make a website efficient for mobile devices, speed is one that cannot be ignored.
Imagine you are a potential customer and open a website on your phone. How fast would you expect the website you visit to load?
When someone visits your website on a mobile device, they expect to see your website in no time. They want to quickly learn about the products on the website and then decide whether to buy products from this website or not.

User experience on the website will greatly influence their impression of your business and their likelihood of becoming customers.
Nearly half of all visitors will leave a mobile site if the page does not load within 3 seconds. If your website has a load time of greater than 3 seconds, minimize the load time (the time it takes for a website to appear on screen) so that visitors can quickly and easily navigate your site.
II. How to mobile version website speed test
1. Website mobile speed test google tools
To check the speed of a mobile website correctly you should use Google tools like PageSpeed Insights or Test my site.
PageSpeed Insights is a real-life and in-the-lab (from Lighthouse) performance reporting tool for a site on both mobile and desktop, analyzing and generating recommendations to speed up loading that page.

Test my site is a tool for evaluating mobile version website speed and providing suggestions for enhancing the mobile site experience. This tool uses data from Lighthouse to make customized recommendations to improve website speed.
See more: All you need to know about Google site speed test tools
2. Other website speed on mobile test tools
Some other tools such as:
- Mobile Website Speed Test – Dareboost
- Free Mobile Website Speed Test – Uptrends
Details: Top 10+ best online free website speed test tools
3. How to mobile version website speed test by Google Test My Site
To mobile version website speed test by Google Test My Site:
- First, you go to Test My Site, then enter the domain of the website you want to check in the box “Enter your domain”, then press Enter or click the arrow to the right of the box.

- Wait about 30 – 60 seconds for the tool to check your website.
- After this tool checks, it will tell how many seconds mobile page speed is on a 4G / 3G connection.

- To receive a full report and suggestions for improving website speed on mobile, please click on the button “Get your full report”. Fill out the information about Email (can enter multiple emails), Company and choose Country. Click “Get your full report”. Immediately, the report will be sent to the email you signed up for, check your email.

Maybe you are interested: Google Lighthouse – pagespeed test tool? How to use Lighthouse Google?
III. How to speed up website for mobile
1. Properly size images
Your page shouldn’t serve images that are larger than the version rendered on the user’s screen. Resize images to match display dimensions to speed up and improve page load time.
2. Defer unused CSS
Style sheets containing unused CSS can significantly increase the time users wait before content appears on their screen. Delete unnecessary CSS.
3. Ensure text remains visible during webfont load
Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading. Specify @font-display when defining custom fonts.
4. Serve images in next-gen formats
Consider using a plugin or service that will automatically convert your uploaded images to the optimal formats.
5. Avoid enormous network payloads
Disable Magento’s built-in JavaScript bundling and minification, and consider using baler instead.
6. Serve static assets with an efficient cache policy
HTTP caching can speed up your page load time for returning users. Increase your cache lifetime to speed up repeat visits to your page.
7. Avoid an excessive DOM size
A large DOM tree can harm your page performance. Look for ways to create DOM nodes only when needed, and destroy them when no longer needed.
8. Reduce JavaScript execution time
Inefficient javascript can slow down your page. Reduce the time spent parsing, compiling, and executing your code.
9. Defer offscreen images
Install a lazy-load plugin (extension) that provides the ability to defer any offscreen images, or switch to a theme that provides that functionality. Also, consider using the AMP plugin.
10. Minify CSS
A number of plugins can speed up your site by concatenating, minifying, and compressing your styles. You may also want to use a build process to do this minification up-front if possible.
11. Eliminate render-blocking resources
Resources are blocking the first paint of your page. Consider delivering critical JS, CSS inline and deferring all non-critical JS, styles. Deferring non-critical resources, and removing anything unused.
12. Serve static assets with an efficient cache policy
HTTP caching can speed up your page load time on repeat visits.
Refer: How to optimize a website speed – 15 best ways to speed up your website
Optimizing the speed of your website on mobile devices is an important factor to make your website more user-friendly and Google-friendly, making your online business more convenient and growing.
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