June 2026 Theme Vitals Update

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The Chrome User Experience Report (CrUX) data for June 2026 is now live on Theme Vitals. In this post, I’ll cover:

1. Change in the data population
2. Shopify overall performance changes
3. Number of themes with improved (and worsened) performance
4. Most improved themes for web performance
5. Highest growth themes in market share

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Change in data population

• The total number of Shopify websites stayed about the same for mobile. Desktop dropped by about 0.02%.
• New themes added this month: Milano, Venice, Elegance, Poetic, Seasons, Highstreet.
• Themes dropped due to not enough data: Cypress.
• I now show 362 (up from 357) total themes. 246 have performance data for mobile devices and 202 for desktop devices.

Shopify overall performance changes

Here are the median, min, and max performance numbers on mobile for all the Shopify themes measured on mobile devices:

(For a more accessible version, see it live on the website: Aggregations).

Overall, things are looking down this month:

• Websites passing All Core Web Vitals on mobile decreased by 0.55 percentage points to 85.55%. On desktop devices, it decreased by 0.35 percentage points to 85.65%.
• Websites passing Largest Contentful Paint on mobile decreased by 0.20 percentage points to 93.60%. On desktop devices, it increased by 0.10 percentage points to 98.30%.
• Websites passing Cumulative Layout Shift on mobile decreased by 0.10 percentage points to 96.30%. On desktop devices, it increased by 0.05 percentage points to 89.15%.
• Websites passing Interaction to Next Paint on mobile websites decreased by 1.30 percentage points to 94.20%. On desktop devices, it decreased by 0.20 percentage points to 99.80%.

In addition, Horizon and its variants have continued to stall with poor performance. See Horizon theme page.

Number of themes with improved (and worsened) performance

This month, about 2/3 of the themes worsened in performance on mobile and about half on desktop.

(For a more accessible version, see it live on the website: Aggregations).

Most improved themes

For mobile devices, these themes had the most improvement in passing all Core Web Vitals:

1. Ira: 11.4 points (55 origins)
2. Piano: 9.7 points (73 origins)
3. California: 9.1 points (89 origins)
4. Tokyo: 8.7 points (71 origins)
5. Barcelona: 7.8 points (124 origins)

For desktop devices, these themes improved the most:

1. Select: 11.6 points (53 origins)
2. Abode: 9.1 points (60 origins)
3. Sydney: 7.6 points (52 origins)
4. Mobilia: 6.6 points (110 origins)
5. Monaco: 6.5 points (70 origins)

When themes on these lists have a small number of origins/market share, some of the improvements could be due to the underlying population of websites changing.

Highest market growth

As a reminder, the market share numbers calculated in Theme Vitals are not the same as number of installs. Here, we’re calculating market share based on the number of origins (websites/domains) in CrUX. CrUX only shares data for websites that reach a certain threshold of popularity. This threshold sometimes changes. To learn more, check out the methodology page for CrUX.

Growth in number of origins

The themes that already have the largest market shares usually have the highest growth in number of origins.

Mobile

1. Horizon: 2651
2. Tinker: 260
3. Atelier: 194
4. Fabric: 162
5. Savor: 142

Desktop

1. Horizon: 525
2. Hyper: 101
3. Tinker: 70
4. Wonder: 28
5. Maximize: 24

Percent growth in origins

Raw growth is interesting but usually focuses too much on the existing themes with high market share. Here, I show which themes are growing the fastest on a percentage basis.

Mobile

1. Pebble: 54.4%
2. Beautify: 33.3%
3. Maximize: 27.7%
4. Seventh: 26.8%
5. Purity: 18.5%

Desktop

1. Maximize: 27.6%
2. Purity: 23.0%
3. Zenith: 18.8%
4. Normcore: 10.0%
5. Meka: 9.5%

Closing

Don't forget to check for the latest updates for the Fastest Shopify Themes.

The Theme Vitals site and this newsletter are meant to be a helpful resource to the Shopify community. Consider sponsoring or upgrading to a paid subscription to help develop new features.

As always, if you have ideas for new features or other improvements, let me know!

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