Cubism
Cubism is a Framer theme by Michael Slotta (Free). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 59 for mobile speed and 61 for desktop speed, 100/100 for SEO and 90/90 for accessibility (mobile/desktop, 0–100).
Mobile59

Desktop61

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 59 | 61 |
| SEO | 100 | 100 |
| Accessibility | 90 | 90 |
| Best practices | 96 | 96 |
Single preset · measured 2 times since 2026-09-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Cubism home page
Mobile
Speed 59 · 41 points to gain
- −25.8 Total Blocking Time medium effort
- −9.6 Speed Index medium effort
- −5.8 Largest Contentful Paint medium effort
- 600 ms Reduce unused JavaScript high effort
Accessibility 90 · 10 points to gain
- −5.1 `<html>` element does not have a `[lang]` attribute low effort
- −5.1 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 61 · 39 points to gain
- −30 Total Blocking Time medium effort
- −8.6 Speed Index medium effort
- −0.5 Largest Contentful Paint medium effort
Accessibility 90 · 10 points to gain
- −5.1 `<html>` element does not have a `[lang]` attribute low effort
- −5.1 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
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Cubism default demo ↗ | 59 | 100 | 90 | 61 | 100 | 90 | 2026-09-12 |
| home ↗ | 59 | 100 | 90 | 61 | 100 | 90 | 2026-09-12 |