Souto
Souto is a Squarespace theme by Squarespace (Free). Tested on 2026-10-28 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 51 for mobile speed and 87 for desktop speed, 85/85 for SEO and 90/90 for accessibility (mobile/desktop, 0–100).
Mobile51
Desktop87
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 51 | 87 |
| SEO | 85 | 85 |
| Accessibility | 90 | 90 |
| Best practices | 100 | 100 |
Single preset · measured 12 times since 2026-10-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Souto home page
Mobile
Speed 51 · 49 points to gain
- −25 Largest Contentful Paint medium effort
- −9.2 First Contentful Paint medium effort
- −8 Speed Index medium effort
- −7.2 Total Blocking Time medium effort
- 2.0 s Reduce unused JavaScript high effort
- 600 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 90 · 10 points to gain
- −4.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.1 Links do not have a discernible name medium effort
- −1.7 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 87 · 13 points to gain
- −8 Largest Contentful Paint medium effort
- −2.8 Speed Index medium effort
- −2.2 Cumulative Layout Shift medium effort
- 200 ms Reduce unused JavaScript high effort
- 120 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 90 · 10 points to gain
- −4.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.1 Links do not have a discernible name medium effort
- −1.7 Heading elements are not in a sequentially-descending order medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Souto default demo ↗ | 51 | 85 | 90 | 87 | 85 | 90 | 2026-10-28 |
| home ↗ | 51 | 85 | 90 | 87 | 85 | 90 | 2026-10-28 |
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<a href="https://themestested.com/theme/squarespace/souto-fluid-demo"><img src="https://themestested.com/badge/squarespace/souto-fluid-demo.svg" alt="Souto speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.