Astro Scifi-UI
Astro Scifi-UI is a Astro theme by Jonny Smillie (Free). Tested on 2026-10-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 92 for mobile speed and 99 for desktop speed, 100/100 for SEO and 97/97 for accessibility (mobile/desktop, 0–100). Note: its demo home page is light — 38 KB in 7 requests — where a stocked storefront is usually 1–4 MB, so the speed score flatters it.
Mobile92
Desktop99
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 92 | 99 |
| SEO | 100 | 100 |
| Accessibility | 97 | 97 |
| Best practices | 100 | 100 |
Single preset · measured 4 times since 2026-10-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Astro Scifi-UI home page
Mobile
Speed 92 · 8 points to gain
- −3 First Contentful Paint medium effort
- −2.5 Speed Index medium effort
- −2.2 Largest Contentful Paint medium effort
Accessibility 97 · 3 points to gain
- −2.5 Document does not have a main landmark. medium effort
Desktop
Accessibility 97 · 3 points to gain
- −2.5 Document does not have a main landmark. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Astro Scifi-UI default demo ↗ | 92 | 100 | 97 | 99 | 100 | 97 | 2026-10-12 |
| home ↗ | 92 | 100 | 97 | 99 | 100 | 97 | 2026-10-12 |
Show this score on your site
A live badge: it always shows Astro Scifi-UI's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/astro-scifi-ui"><img src="https://themestested.com/badge/astro/astro-scifi-ui.svg" alt="Astro Scifi-UI speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.