Operating System
Operating System is a Framer theme by John Nicholson ($129). Tested on 2026-10-05 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 39 for mobile speed and 57 for desktop speed, 69/69 for SEO and 88/88 for accessibility (mobile/desktop, 0–100). Note: its demo home page is heavy — 12.9 MB — heavier than a typical store, so the speed score may understate the theme.
Mobile39
Desktop57
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 39 | 57 |
| SEO | 69 | 69 |
| Accessibility | 88 | 88 |
| Best practices | 92 | 92 |
Single preset · measured 2 times since 2026-10-05 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Operating System home page
Mobile
Speed 39 · 61 points to gain
- −26.1 Total Blocking Time medium effort
- −25 Largest Contentful Paint medium effort
- −7 Speed Index medium effort
- −3.2 First Contentful Paint medium effort
- 450 ms Reduce unused JavaScript high effort
SEO 69 · 31 points to gain
- −31 Page is blocked from indexing low effort
Accessibility 88 · 12 points to gain
- −4.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.1 `<html>` element does not have a `[lang]` attribute low effort
- −1.8 Heading elements are not in a sequentially-descending order medium effort
- −1.8 Document does not have a main landmark. medium effort
Best practices 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Desktop
Speed 57 · 43 points to gain
- −27 Total Blocking Time medium effort
- −11.5 Largest Contentful Paint medium effort
- −4.2 Speed Index medium effort
SEO 69 · 31 points to gain
- −31 Page is blocked from indexing low effort
Accessibility 88 · 12 points to gain
- −4.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.1 `<html>` element does not have a `[lang]` attribute low effort
- −1.8 Heading elements are not in a sequentially-descending order medium effort
- −1.8 Document does not have a main landmark. medium effort
Best practices 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Operating System default demo ↗ | 39 | 69 | 88 | 57 | 69 | 88 | 2026-10-05 |
| home ↗ | 39 | 69 | 88 | 57 | 69 | 88 | 2026-10-05 |
Show this score on your site
A live badge: it always shows Operating System's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/framer/operating-system"><img src="https://themestested.com/badge/framer/operating-system.svg" alt="Operating System speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.