Grosz
Grosz is a Framer theme by Tracklock Studio ($129). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 50 for mobile speed and 59 for desktop speed, 100/100 for SEO and 89/89 for accessibility (mobile/desktop, 0–100). Note: its demo home page is heavy — 23.7 MB — heavier than a typical store, so the speed score may understate the theme.
Mobile50

Desktop59

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 50 | 59 |
| SEO | 100 | 100 |
| Accessibility | 89 | 89 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-13 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Grosz home page
Mobile
Speed 50 · 50 points to gain
- −25 Largest Contentful Paint medium effort
- −10.5 Cumulative Layout Shift medium effort
- −9.7 Speed Index medium effort
- −5.3 First Contentful Paint medium effort
- 450 ms Reduce unused JavaScript high effort
Accessibility 89 · 11 points to gain
- −4.5 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.5 `<html>` element does not have a `[lang]` attribute low effort
- −1.9 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 59 · 41 points to gain
- −24.8 Largest Contentful Paint medium effort
- −8.2 Cumulative Layout Shift medium effort
- −5.5 Speed Index medium effort
- −2.7 Total Blocking Time medium effort
Accessibility 89 · 11 points to gain
- −4.5 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.5 `<html>` element does not have a `[lang]` attribute low effort
- −1.9 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 | ||||||
| Grosz default demo ↗ | 50 | 100 | 89 | 59 | 100 | 89 | 2026-09-13 |
| home ↗ | 50 | 100 | 89 | 59 | 100 | 89 | 2026-09-13 |