ISOMORPH.LAB
ISOMORPH.LAB is a Framer theme by John Nicholson (Free). Tested on 2026-10-15 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 68 for mobile speed and 93 for desktop speed, 100/100 for SEO and 89/88 for accessibility (mobile/desktop, 0–100).
Mobile68
Desktop93
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 68 | 93 |
| SEO | 100 | 100 |
| Accessibility | 89 | 88 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-10-15 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — ISOMORPH.LAB home page
Mobile
Speed 68 · 32 points to gain
- −24.8 Largest Contentful Paint medium effort
- −6.1 First Contentful Paint medium effort
- −1 Speed Index medium effort
- 450 ms Reduce unused JavaScript high effort
Accessibility 89 · 11 points to gain
- −4.3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.3 `<html>` element does not have a `[lang]` attribute low effort
- −1.9 Document does not have a main landmark. medium effort
Desktop
Speed 93 · 7 points to gain
- −6.3 Largest Contentful Paint medium effort
- −0.5 First Contentful Paint medium effort
Accessibility 88 · 12 points to gain
- −4.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −4.9 `<html>` element does not have a `[lang]` attribute low effort
- −2.1 Document does not have a main landmark. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| ISOMORPH.LAB default demo ↗ | 68 | 100 | 89 | 93 | 100 | 88 | 2026-10-15 |
| home ↗ | 68 | 100 | 89 | 93 | 100 | 88 | 2026-10-15 |
Show this score on your site
A live badge: it always shows ISOMORPH.LAB's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/framer/isomorph-lab"><img src="https://themestested.com/badge/framer/isomorph-lab.svg" alt="ISOMORPH.LAB speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.