There are 3 metrics to pay attention when measuring your website’s performance are the Core Web Vitals:
Largest Contentful Paint (LCP): how long it takes for the largest image & text to load on the site. This is the most common way of measuring how long it takes for a site to be fully loaded for a visitor.
Interaction to Next Paint (INP): how quickly a web page responds to any action performs on the website (i.e. clicking a button or typing).
Cumulative Layout Shift (CLS): this is a measure of how “stable” the website is when loading (i.e. do images load in and stay in place or do they shift up/down when loading in the website)
Together, these 3 Core Web Vitals measure the speed, interactivity, and stability of your website. The play a critical role in Google’s ranking algorithm and have strong relationship with your website’s conversion rate and overall customer experience.
In short, websites with better Core Web Vitals have better search rankings, better conversion rates, and an provide a better user experience.
Here are the benchmark to aim for with LCP, INP, and CLS:
LCP — 2.5 seconds or less
INP — 200 milliseconds or less
CLS — 0.1 or less
Here is the LCP, INP, and CLS for the Jennifer Adams website:
LCP
Mobile: 2.2 seconds
Desktop: 1.9 seconds
INP
Mobile: 162 ms
Desktop: 100 ms
CLS
Mobile: 0.05
Desktop: 0.16
Overall, the Jennifer Adams site has solid performance on mobile and desktop devices 👍
The site’s loading time, interactivity, and stability are not issues that are hurting it’s performance
That said, any improvements in the site’s loading time would be very accretive for the company (i.e. increase conversion rates, improve SEO, decrease CAC, improve overall customer acquisition cost)
According to the audit results, the site might be experiencing some slight instability when loading on desktop computers; however, the CLS score is so close the the recommended range that it’s not likely that it is causing any negative effects.
The recommended CLS score — or measure of a website’s stability — is 0.1 or less.
The Jennifer Adams site scored a 0.16 CLS score on desktop. Very close the recommended range and not likely to be causing any issues.
There are no recommended actions at this moment. I’ll continue to monitor the Jennifer Adams website for decreases in site performance.
to help ecommerce companies maximize their conversion rate through proper site speed optimization. To date, we’ve helped more than a dozen Shopify sites increase their CVR by 20-50% through site speed optimization.
If you’re every curious about Shopify site performance or the work we do at Roadrunner: