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The Chrome User Experience Report (CrUX) data for November 2025 is now live on Theme Vitals. In this post, I’ll cover:

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Change in data population

  • The total number of Shopify websites increased by 0.04% to 592,905 on mobile devices. On desktop devices, it increased by 0.08% to 308,948.
  • New themes added this month: Krank, Maximize, Flute, Line, Seasons, Pastarina.
  • Themes dropped due to not enough data: none.
  • I now show 328 (up from 322) total themes. 228 have performance data for mobile devices and 200 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:

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

Websites passing All Core Web Vitals increased by 0.45 percentage points to 83.90% on mobile. On desktop devices, it increased by 1.40 percentage points to 85.35%.

Mobile performance improved by 0.5 percentage points and dropped on desktop by 0.4 percentage points. This was primarily driven by improvements in LCP on both form factors. The only metric to get worse was CLS on desktop devices.

Update on new flagship Shopify theme Horizon

Horizon is still struggling with performance. I don't think they are actively improving it at the moment so it might be a while before we see any movement. The poor performance is driven by LCP and INP which are arguably the 2 most important web vitals metrics. It struggles with all steps in loading speed - TTFB, FCP, and LCP. On mobile, it is ranked 213th out of 228 themes with data. It's doing a bit better on desktop at 70th out of 200.

This is unfortunate as Horizon continues to grow and take over marketshare from faster themes. See full data on the Horizon theme page.

Most improved themes

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

  1. Cello: 16.5 points (153 origins)
  2. Spark: 9.7 points (159 origins)
  3. Igloo: 8.9 points (77 origins)
  4. Outsiders: 8.6 points (118 origins)
  5. Drop: 8.5 points (107 origins)

For desktop devices, these themes improved the most:

  1. Abode: 12.7 points (68 origins)
  2. Ultra: 8.6 points (71 origins)
  3. Starlite: 8.2 points (117 origins)
  4. Spark: 7.6 points (79 origins)
  5. Fetch: 6.8 points (137 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. Some of the older themes are back in the lineup.

Mobile

  1. Dawn: 3779
  2. Horizon: 2081
  3. Prestige: 636
  4. Craft: 443
  5. Refresh: 366

Desktop

  1. Dawn: 3425
  2. Prestige: 889
  3. Horizon: 693
  4. Debut: 493
  5. Impulse: 472

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. It's no surprise that Horizon is leading here.

Mobile

Edge is in the top spot twice in a row:

  1. Edge: 68.0%
  2. Ritual: 49.8%
  3. Horizon: 48.7%
  4. Allure: 44.7%
  5. Hyper: 34.5%

Desktop

  1. Edge: 59.4%
  2. Ritual: 58.8%
  3. Horizon: 49.1%
  4. Fabric: 42.9%
  5. Vessel: 39.8%

Closing

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

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

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