OSSO
OSSO is a Framer theme by Calvin Lai (Free). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 67 for mobile speed and 93 for desktop speed, 92/92 for SEO and 82/86 for accessibility (mobile/desktop, 0–100). Note: its demo home page is heavy — 11.8 MB — heavier than a typical store, so the speed score may understate the theme.
Mobile67
Desktop93
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 67 | 93 |
| SEO | 92 | 92 |
| Accessibility | 82 | 86 |
| 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 — OSSO home page
Mobile
Speed 67 · 33 points to gain
- −24 Largest Contentful Paint medium effort
- −6.3 First Contentful Paint medium effort
- −3 Speed Index medium effort
- 750 ms Reduce unused JavaScript high effort
SEO 92 · 8 points to gain
- −7.7 Links are not crawlable medium effort
Accessibility 82 · 18 points to gain
- −4.2 Elements use prohibited ARIA attributes medium effort
- −4.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.2 Links do not have a discernible name medium effort
- −4.2 Touch targets do not have sufficient size or spacing. medium effort
- −1.8 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 93 · 7 points to gain
- −4.3 Speed Index medium effort
- −2.2 Largest Contentful Paint medium effort
- 120 ms Reduce unused JavaScript high effort
SEO 92 · 8 points to gain
- −7.7 Links are not crawlable medium effort
Accessibility 86 · 14 points to gain
- −4.2 Elements use prohibited ARIA attributes medium effort
- −4.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.2 Links do not have a discernible name medium effort
- −1.8 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 | ||||||
| OSSO default demo ↗ | 67 | 92 | 82 | 93 | 92 | 86 | 2026-09-13 |
| home ↗ | 67 | 92 | 82 | 93 | 92 | 86 | 2026-09-13 |
Show this score on your site
A live badge: it always shows OSSO's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/framer/osso"><img src="https://themestested.com/badge/framer/osso.svg" alt="OSSO speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.