ONE
Listed as "ONE - Astro 5 Shadcn UI Starter Template"
ONE is a Astro theme by Tony O'Connell (Free). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 71 for mobile speed and 95 for desktop speed, 100/100 for SEO and 100/100 for accessibility (mobile/desktop, 0–100).
Mobile71
Desktop95
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 71 | 95 |
| SEO | 100 | 100 |
| Accessibility | 100 | 100 |
| 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 — ONE - Astro 5 Shadcn UI Starter Template home page
Mobile
Speed 71 · 29 points to gain
- −19.5 Largest Contentful Paint medium effort
- −5.5 First Contentful Paint medium effort
- −2.2 Speed Index medium effort
- −2.1 Total Blocking Time medium effort
- 900 ms Reduce unused JavaScript high effort
Desktop
Speed 95 · 5 points to gain
- −3.8 Speed Index medium effort
- −1.3 Largest Contentful Paint medium effort
- 160 ms Reduce unused JavaScript high effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| ONE - Astro 5 Shadcn UI Starter Template default demo ↗ | 71 | 100 | 100 | 95 | 100 | 100 | 2026-09-13 |
| home ↗ | 71 | 100 | 100 | 95 | 100 | 100 | 2026-09-13 |
Show this score on your site
A live badge: it always shows ONE's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/astro-5-shadcn-ui-started-template"><img src="https://themestested.com/badge/astro/astro-5-shadcn-ui-started-template.svg" alt="ONE speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.