Grunge
Grunge is a Astro theme by Jess Gaspar (Free). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 85 for mobile speed and 97 for desktop speed, 100/100 for SEO and 100/100 for accessibility (mobile/desktop, 0–100).
Mobile85
Desktop97
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 85 | 97 |
| SEO | 100 | 100 |
| Accessibility | 100 | 100 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Grunge home page
Mobile
Speed 85 · 15 points to gain
- −8.5 Cumulative Layout Shift medium effort
- −5 Largest Contentful Paint medium effort
- −1.1 First Contentful Paint medium effort
Desktop
Speed 97 · 3 points to gain
- −1.7 Cumulative Layout Shift medium effort
- −1 Largest Contentful Paint medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Grunge default demo ↗ | 85 | 100 | 100 | 97 | 100 | 100 | 2026-09-12 |
| home ↗ | 85 | 100 | 100 | 97 | 100 | 100 | 2026-09-12 |
Show this score on your site
A live badge: it always shows Grunge's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/grunge"><img src="https://themestested.com/badge/astro/grunge.svg" alt="Grunge speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.