Google put forward three factors , namely CLS (Cumulative Layout Shift), FID (First Input Delay), LCP(Largest Contentful Paint), which are crucial to the user experience. Google uses these factors to rank the sites with their algorithm too.
What Google left out was how to actually do this. But that wasn’t on purpose . They have actually been pushing the idea that Progressive Web Apps (PWA) are the future of web
So you might have several questions now, one of them being’
Using PWA's To boost Google Core Web Vitals
PWA or Progressive Web Apps are website pages that can mimic the look, feel and performance of native web apps. They are able to achieve near native performance using techniques such as service workers, caching etc which are not available to ordinary web pages.
PWAs are extremely powerful. They can even push notifications like ordinary apps, which can come in handy for notifying users. They are also able to work offline , use less data than ordinary sites and apps. Even by less than 53 percent in some cases!!
Put simply, PWAs are one of the best things you can do for your site now
How will switching to PWA affect your Core Web Vitals?
We will answer this question by going through each factor individually.
Largest Contentful Paint
LCP deals with loading time. It measures the time required for your page to load the largest content visible in viewport of the user after the initial click on the URL
Using a PWA can absolutely crush your site on this metric as PWAs are known for their blazing fast performance using less data.
PWAs achieve this mainly via two factors:
- They have access to hardware optimizations that are not available for ordinary web pages. This allows for more processing power which can be utilized by us.
- This gain in processing power via service workers etc, helps us to sent smaller bundles of data using advanced compression techniques as it can be unpacked and rendered instantaneously by the device.
- PWAs also have access to caching which gives the feeling of loading even more faster on reloads as data has been saved on device rather than be fetched
First Input Delay
FID is the measure of interactivity. Once again this is a metric that PWAs can absolutely obliterate. Service Workers, Caching and several other hardware optimizations helps sites to even run animations at 60fps speeds. FID is a no-brainer case for PWA.
Cumulative Layout Shift
Having a PWA helps you give a standard structure for the site as most PWAs are built using frameworks like React which are lightweight. You can achieve almost granular control with the structure of your block elements when using PWA.
You can splice the block elements to finer pieces, compress those bundles and render them at the user end without any delays.
The PWA helps to give an overarching architecture to the webpage, which will help to provide a constant frame of reference for the user.
Besides the above there are several other benefits to using a PWA such as:
- Offline use of web page
- Very less data usage, enabling you to provide good experience in region with shaky coverage
- All PWAs transfer data using HTTPS only, making the data transaction secure
- Ability to push notifications, which is something web sites couldn’t do before
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So how does Google evaluate these factors?
Google’s ranking algorithm relies upon field data collection from users as part of the Chrome User Experience Report (CRux). This aggregated data consists of real user experiences across devices but is the data is skewed to mobile as this device is the most heavily weighted for ranking.
Magento has historically struggled in terms of speed in its mobile experience delivery. The chief causes are detailed in another post “Why is Magento’s (Adobe Commerce) mobile speed so slow?”. But…
The data collected by CrUX is available publicly through a number of tools and is used by Google Search to inform the page experience ranking factor.
CrUX is the official dataset of the Web Vitals program. All user-centric Core Web Vitals metrics will be represented in the dataset.
CrUX data is collected from real browse
PWA's can solve Magento's mobile SEO Issues
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