Slateon
Slateon is a Astro theme by Waida Studio (Paid). Tested on 2026-10-26 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 83 for mobile speed and 100 for desktop speed, 100/100 for SEO and 95/95 for accessibility (mobile/desktop, 0–100). Note: its demo home page is heavy — 11 MB — heavier than a typical store, so the speed score may understate the theme.
Mobile83
Desktop100
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 83 | 100 |
| SEO | 100 | 100 |
| Accessibility | 95 | 95 |
| Best practices | 100 | 100 |
Single preset · measured 6 times since 2026-10-26 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Slateon home page
Mobile
Speed 83 · 17 points to gain
- −12 Largest Contentful Paint medium effort
- −2.9 First Contentful Paint medium effort
- −2.5 Speed Index medium effort
Accessibility 95 · 5 points to gain
- −4.7 `[aria-*]` attributes do not have valid values medium effort
Desktop
Accessibility 95 · 5 points to gain
- −4.7 `[aria-*]` attributes do not have valid values medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Slateon default demo ↗ | 83 | 100 | 95 | 100 | 100 | 95 | 2026-10-26 |
| home ↗ | 83 | 100 | 95 | 100 | 100 | 95 | 2026-10-26 |
Show this score on your site
A live badge: it always shows Slateon's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/slateon"><img src="https://themestested.com/badge/astro/slateon.svg" alt="Slateon speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.