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Fastest Shopify Themes Ranked By PSI Scores

Beautiful and feature-rich themes can directly impact user-journeys and conversions. 

In addition to finding a feature-rich theme, it’s important for store owners to consider the impact of a Shopify theme on SEO and performance. The site’s performance can impact both user experience and SEO of the site.

There are numerous Shopify themes on Shopify Store and marketplaces like ThemeForest. Our team gathered page speed data on 375 Shopify themes using PageSpeed Insights API to see how they fared in terms of web performance.

Which is the fastest Shopify theme?

As per our tests, Avone shopify theme scores the best in the PSI test. It gets a PSI score of 88 for mobile and 99 for desktop. 

Here’s the list of top 10 fastest shopify themes by PSI score on mobile and desktop:

ThemePerformance Score (Mobile)Performance Score (Desktop)
Avone 8899
Light 7098
Mono 7098
Spring 6997
Debut 6793
Digitale 6796
Geneve6497
Beauty 6396
Uplift 6396
Editorial 6297
Shopify themes with best PSI scores for mobile and desktop

Link to complete test results for 375 themes:

Mobile

Desktop

Performance score of 10 fastest themes for collection and product pages

The aforementioned scores evaluate the performance of the homepage. However, the ‘fastest theme’ must be tested for its other pages as well. We ran the same tests on collection and product pages for the top 10 fastest themes. As per these tests, Debut theme has the best performing collection and product pages.

Performance Score for Collections

ThemePerformance Score (Mobile)Performance Score (Desktop)
Debut7797
Uplift7197
Beauty7998
Editorial7196
Digitale8598
Light7897
Sunrise8596
Geneve8298
Mono6896
Avone6896
PSI scores for collection pages of 10 fastest Shopify themes

Link to complete data:

Mobile

Desktop

Performance Score for Product page

ThemePerformance Score (Desktop)Performance Score (Mobile)
Debut9454
Digitale9761
Light9655
Uplift9067
Editorial9469
Sunrise9767
Geneve9356
Mono8447
Beauty9073
Avone9475
PSI scores for product pages of 10 fastest Shopify themes

Link to complete data:

Mobile

Desktop

The Process

  1. We gathered the list of themes by Shopify and third party vendors like ThemeForest.
  2. We ran the PSI score 3 times for mobile and desktop for each theme.
  3. Lastly, we calculated the average score for each platform wise.

Metrics Measured

There are many metrics you can use to evaluate the speed performance of a site like loading time, total HTTP requests, page size, CSS size, Javascript size, speed index, time to first byte, etc.

For our test, we used the Pagespeed Insights API to evaluate and find the best Shopify themes in terms of what Google calls as a factor for “Page-experience”. 

PageSpeed Insights bases the score on the Lighthouse which measures the following metrics:

MetricWeight
First Contentful Paint0.1
Speed Index0.1
Largest Contentful Paint0.25
Time to Interactive0.1
Total Blocking Time0.3
Cumulative Layout Shift0.15

Source: https://web.dev/performance-scoring/ 

Here’s a quick definition of the measured metrics taken from Web.dev documentation:

First Contentful Paint:

The First Contentful Paint (FCP) metric measures the time from when the page starts loading to when any part of the page’s content is rendered on the screen.

Speed Index:

Speed Index measures how quickly content is visually displayed during page load.

Largest Contentful Paint:

The Largest Contentful Paint (LCP) metric reports the render time of the largest image or text block visible within the viewport, relative to when the page first started loading.

Time to Interactive:

TTI measures how long it takes a page to become fully interactive.

Total Blocking Time:

The Total Blocking Time (TBT) metric measures the total amount of time between First Contentful Paint (FCP) and Time to Interactive (TTI).

Cumulative Layout Shift:

Cumulative Layout Shift (CLS) is a measure of the largest burst of layout shift scores for every unexpected layout shift that occurs during the entire lifespan of a page.

What’s the right way to measure a theme’s web performance?

There’s no one right way. There are many tools you can use to check the performance of a theme. Many consider metrics like total loading time and number of requests as important factors when it comes to evaluating the speed of Shopify themes. However, as the web is becoming more and more user-centric, these metrics, regardless of how ‘accurately’ they measure site speed, cannot tell us how good the performance is for an actual user.

We used PSI because it uses Lighthouse to measure performance and Lighthouse is known to measure user-centric performance metrics. You can check out our blog on how to measure site speed to learn more about measuring site speed. 

Not to forget, site performance and conversions are closely connected. To delve deeper into this, you could check our blog on how live chat tools impact site speed. While all these blogs offer a comprehensive overview, we understand that doubts can still make their way. If you have any, we’re right here to resolve them.

And if you want to talk to us about how our team can help improve your Shopify store performance, reach out to us at letstalk@cueblocks.com and we’ll get back to you in a jiffy.

Harleen Sandhu

I'm a part of CueBlock's SEO team. I like traveling, reading, and experimenting with new ways in SEO to get the best results.

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