Radian
Radian is a Squarespace theme by Squarespace (Free). Tested on 2026-09-14 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 55 for mobile speed and 66 for desktop speed, 85/85 for SEO and 95/95 for accessibility (mobile/desktop, 0–100).
Mobile55
Desktop66
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 55 | 66 |
| SEO | 85 | 85 |
| Accessibility | 95 | 95 |
| Best practices | 96 | 96 |
Single preset · measured 2 times since 2026-09-14 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Radian home page
Mobile
Speed 55 · 45 points to gain
- −25 Largest Contentful Paint medium effort
- −10 First Contentful Paint medium effort
- −9.8 Speed Index medium effort
- 5.1 s Reduce unused JavaScript high effort
- 750 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 95 · 5 points to gain
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −1.5 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 66 · 34 points to gain
- −16.3 Largest Contentful Paint medium effort
- −8.4 Total Blocking Time medium effort
- −4.8 First Contentful Paint medium effort
- −4.1 Speed Index medium effort
- 560 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 95 · 5 points to gain
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −1.5 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 | ||||||
| Radian default demo ↗ | 55 | 85 | 95 | 66 | 85 | 95 | 2026-09-14 |
| home ↗ | 55 | 85 | 95 | 66 | 85 | 95 | 2026-09-14 |
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<a href="https://themestested.com/theme/squarespace/radian-fluid-demo"><img src="https://themestested.com/badge/squarespace/radian-fluid-demo.svg" alt="Radian speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.