Collette
Collette 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 57 for mobile speed and 66 for desktop speed, 92/92 for SEO and 92/91 for accessibility (mobile/desktop, 0–100).
Mobile57
Desktop66
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 57 | 66 |
| SEO | 92 | 92 |
| Accessibility | 92 | 91 |
| Best practices | 100 | 100 |
Single preset · measured 10 times since 2026-10-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Collette home page
Mobile
Speed 57 · 43 points to gain
- −25 Largest Contentful Paint medium effort
- −9 First Contentful Paint medium effort
- −4.5 Total Blocking Time medium effort
- −4.2 Speed Index medium effort
- 2.2 s Reduce unused JavaScript high effort
- 750 ms Reduce unused CSS high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Accessibility 92 · 8 points to gain
- −5.7 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −2.4 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 66 · 34 points to gain
- −21 Total Blocking Time medium effort
- −10.8 Largest Contentful Paint medium effort
- −1.6 First Contentful Paint medium effort
- −1.1 Speed Index medium effort
- 250 ms Reduce unused JavaScript high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Accessibility 91 · 9 points to gain
- −6.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −2.7 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 | ||||||
| Collette default demo ↗ | 57 | 92 | 92 | 66 | 92 | 91 | 2026-10-28 |
| home ↗ | 57 | 92 | 92 | 66 | 92 | 91 | 2026-10-28 |
Show this score on your site
A live badge: it always shows Collette's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/squarespace/collette-fluid-demo"><img src="https://themestested.com/badge/squarespace/collette-fluid-demo.svg" alt="Collette speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.