Sidereal
Sidereal is a Framer theme by DiverseKit (Free). Tested on 2026-09-14 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 79 for mobile speed and 75 for desktop speed, 100/100 for SEO and 78/70 for accessibility (mobile/desktop, 0–100).
Mobile79
Desktop75
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 79 | 75 |
| SEO | 100 | 100 |
| Accessibility | 78 | 70 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-14 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Sidereal home page
Mobile
Speed 79 · 21 points to gain
- −17.3 Largest Contentful Paint medium effort
- −2.6 First Contentful Paint medium effort
- −0.9 Speed Index medium effort
Accessibility 78 · 22 points to gain
- −8.9 `<html>` element does not have a `[lang]` attribute low effort
- −8.9 Links do not have a discernible name medium effort
- −3.8 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 75 · 25 points to gain
- −22.8 Largest Contentful Paint medium effort
- −1.9 Speed Index medium effort
Accessibility 70 · 30 points to gain
- −8.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −8.9 `<html>` element does not have a `[lang]` attribute low effort
- −8.9 Links do not have a discernible name medium effort
- −3.8 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 | ||||||
| Sidereal default demo ↗ | 79 | 100 | 78 | 75 | 100 | 70 | 2026-09-14 |
| home ↗ | 79 | 100 | 78 | 75 | 100 | 70 | 2026-09-14 |
Show this score on your site
A live badge: it always shows Sidereal's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/framer/sidereal"><img src="https://themestested.com/badge/framer/sidereal.svg" alt="Sidereal speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.