JetBlack Construction
JetBlack Construction is a WordPress theme by Firefly Themes (Free). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 72 for mobile speed and 98 for desktop speed, 50/50 for SEO and 94/95 for accessibility (mobile/desktop, 0–100). On its marketplace it is rated 5.0 out of 5 from 1 reviews.
Mobile72
Desktop98
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 72 | 98 |
| SEO | 50 | 50 |
| Accessibility | 94 | 95 |
| 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 — JetBlack Construction home page
Mobile
Speed 72 · 28 points to gain
- −20.5 Largest Contentful Paint medium effort
- −4.5 First Contentful Paint medium effort
- −2.7 Speed Index medium effort
- 150 ms Reduce unused CSS high effort
SEO 50 · 50 points to gain
- −40.3 Page is blocked from indexing low effort
- −10 Document does not have a meta description low effort
Accessibility 94 · 6 points to gain
- −5.6 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Desktop
Speed 98 · 2 points to gain
- −1.7 Largest Contentful Paint medium effort
SEO 50 · 50 points to gain
- −40.3 Page is blocked from indexing low effort
- −10 Document does not have a meta description low effort
Accessibility 95 · 5 points to gain
- −4.7 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| JetBlack Construction default demo ↗ | 72 | 50 | 94 | 98 | 50 | 95 | 2026-09-13 |
| home ↗ | 72 | 50 | 94 | 98 | 50 | 95 | 2026-09-13 |
Show this score on your site
A live badge: it always shows JetBlack Construction's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/wordpress/jetblack-construction"><img src="https://themestested.com/badge/wordpress/jetblack-construction.svg" alt="JetBlack Construction speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.