Clean Box
Clean Box is a WordPress theme by Catch Themes (Free). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 100 for mobile speed and 100 for desktop speed, 54/54 for SEO and 92/94 for accessibility (mobile/desktop, 0–100). On its marketplace it is rated 5.0 out of 5 from 13 reviews.
Mobile100
Desktop100
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 100 | 100 |
| SEO | 54 | 54 |
| Accessibility | 92 | 94 |
| 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 — Clean Box home page
Mobile
SEO 54 · 46 points to gain
- −36.6 Page is blocked from indexing low effort
- −9.1 Document does not have a meta description low effort
Accessibility 92 · 8 points to gain
- −5.4 Links rely on color to be distinguishable. medium effort
- −2.3 Heading elements are not in a sequentially-descending order medium effort
Desktop
SEO 54 · 46 points to gain
- −36.6 Page is blocked from indexing low effort
- −9.1 Document does not have a meta description low effort
Accessibility 94 · 6 points to gain
- −4 Links rely on color to be distinguishable. medium effort
- −1.7 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 | ||||||
| Clean Box default demo ↗ | 100 | 54 | 92 | 100 | 54 | 94 | 2026-09-13 |
| home ↗ | 100 | 54 | 92 | 100 | 54 | 94 | 2026-09-13 |
Show this score on your site
A live badge: it always shows Clean Box's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/wordpress/clean-box"><img src="https://themestested.com/badge/wordpress/clean-box.svg" alt="Clean Box speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.