Common Tongue
Common Tongue 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 54 for mobile speed and 87 for desktop speed, 92/92 for SEO and 89/89 for accessibility (mobile/desktop, 0–100).
Mobile54
Desktop87
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 54 | 87 |
| SEO | 92 | 92 |
| Accessibility | 89 | 89 |
| Best practices | 96 | 96 |
Single preset · measured 8 times since 2026-10-14 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Common Tongue home page
Mobile
Speed 54 · 46 points to gain
- −25 Largest Contentful Paint medium effort
- −10 First Contentful Paint medium effort
- −9.9 Speed Index medium effort
- −1.2 Total Blocking Time medium effort
- 6.0 s Reduce unused JavaScript high effort
- 900 ms Reduce unused CSS high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Accessibility 89 · 11 points to gain
- −5.6 Form elements do not have associated labels medium effort
- −3.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −1.7 Heading elements are not in a sequentially-descending order medium effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Desktop
Speed 87 · 13 points to gain
- −8.7 Total Blocking Time medium effort
- −2.2 Largest Contentful Paint medium effort
- −1.7 Speed Index medium effort
- 110 ms Reduce unused CSS high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Accessibility 89 · 11 points to gain
- −5.6 Form elements do not have associated labels medium effort
- −3.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −1.7 Heading elements are not in a sequentially-descending order medium effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Common Tongue default demo ↗ | 54 | 92 | 89 | 87 | 92 | 89 | 2026-10-28 |
| home ↗ | 54 | 92 | 89 | 87 | 92 | 89 | 2026-10-28 |
Show this score on your site
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<a href="https://themestested.com/theme/squarespace/common-tongue-fluid-demo"><img src="https://themestested.com/badge/squarespace/common-tongue-fluid-demo.svg" alt="Common Tongue speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.