Stack
Stack is a Shopify theme by Creative Commerce ($320). Tested on 2026-11-10 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 66 for mobile speed and 88 for desktop speed, 90/90 for SEO and 98/100 for accessibility (mobile/desktop, 0–100). Those are medians across its 5 tested presets; mobile speed across every tested page ranges from 59 to 71.
Mobile70
Desktop81
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 66 | 88 |
| SEO | 90 | 90 |
| Accessibility | 98 | 100 |
| Best practices | 95 | 95 |
Median of 5 presets · measured 31 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Stack home page
Mobile
Speed 70 · 30 points to gain
- −25 Largest Contentful Paint medium effort
- −5.3 Speed Index medium effort
- 150 ms Reduce unused CSS high effort
SEO 85 · 15 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low effort
Accessibility 97 · 3 points to gain
- −2.9 Touch targets do not have sufficient size or spacing. medium effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Desktop
Speed 81 · 19 points to gain
- −14.3 Largest Contentful Paint medium effort
- −5 Speed Index medium effort
SEO 85 · 15 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low effort
Best practices 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Gardenia demo ↗ | 69 | 90 | 98 | 88 | 90 | 100 | 2026-09-12 |
| category ↗ | 70 | 92 | 100 | 91 | 92 | 100 | 2026-09-12 |
| home ↗ | 68 | 85 | 97 | 83 | 85 | 100 | 2026-09-12 |
| product ↗ | 69 | 92 | 96 | 91 | 92 | 99 | 2026-09-12 |
| Lager demo ↗ | 65 | 87 | 95 | 88 | 87 | 97 | 2026-09-12 |
| category ↗ | 71 | 92 | 100 | 92 | 92 | 100 | 2026-09-12 |
| home ↗ | 65 | 77 | 90 | 86 | 77 | 93 | 2026-09-12 |
| product ↗ | 59 | 92 | 96 | 85 | 92 | 99 | 2026-09-12 |
| Setup demo ↗ | 66 | 92 | 96 | 91 | 92 | 98 | 2026-09-12 |
| category ↗ | 70 | 92 | 100 | 91 | 92 | 100 | 2026-09-12 |
| home ↗ | 69 | 92 | 93 | 91 | 92 | 96 | 2026-09-12 |
| product ↗ | 59 | 92 | 96 | 92 | 92 | 99 | 2026-09-12 |
| Stack default demo ↗ | 64 | 90 | 98 | 88 | 90 | 100 | 2026-09-11 |
| category ↗ | 60 | 92 | 100 | 92 | 92 | 100 | 2026-09-12 |
| home ↗ | 70 | 85 | 97 | 81 | 85 | 100 | 2026-09-11 |
| product ↗ | 63 | 92 | 96 | 90 | 92 | 99 | 2026-09-12 |
| Workbench demo ↗ | 69 | 90 | 98 | 82 | 90 | 100 | 2026-09-12 |
| category ↗ | 70 | 92 | 100 | 91 | 92 | 100 | 2026-09-12 |
| home ↗ | 69 | 85 | 97 | 80 | 85 | 100 | 2026-09-12 |
| product ↗ | 69 | 92 | 96 | 76 | 92 | 99 | 2026-09-12 |
Show this score on your site
A live badge: it always shows Stack's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/shopify/stack"><img src="https://themestested.com/badge/shopify/stack.svg" alt="Stack speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.