Block
Block is a Webflow theme by Templates ($129). Tested on 2026-09-27 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 67 for mobile speed and 95 for desktop speed, 100/100 for SEO and 87/87 for accessibility (mobile/desktop, 0–100).
Mobile67
Desktop95
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 67 | 95 |
| SEO | 100 | 100 |
| Accessibility | 87 | 87 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-27 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Block home page
Mobile
Speed 67 · 33 points to gain
- −21.8 Largest Contentful Paint medium effort
- −8.5 First Contentful Paint medium effort
- −2.7 Speed Index medium effort
- 600 ms Reduce unused JavaScript high effort
- 150 ms Reduce unused CSS high effort
Accessibility 87 · 13 points to gain
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.4 `<html>` element does not have a `[lang]` attribute low effort
- −3.4 Links rely on color to be distinguishable. medium effort
- −1.5 Heading elements are not in a sequentially-descending order medium effort
- −1.5 Document does not have a main landmark. medium effort
Desktop
Speed 95 · 5 points to gain
- −2.7 Largest Contentful Paint medium effort
- −1.5 First Contentful Paint medium effort
Accessibility 87 · 13 points to gain
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.4 `<html>` element does not have a `[lang]` attribute low effort
- −3.4 Links rely on color to be distinguishable. medium effort
- −1.5 Heading elements are not in a sequentially-descending order medium effort
- −1.5 Document does not have a main landmark. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Block default demo ↗ | 67 | 100 | 87 | 95 | 100 | 87 | 2026-09-27 |
| home ↗ | 67 | 100 | 87 | 95 | 100 | 87 | 2026-09-27 |
Show this score on your site
A live badge: it always shows Block's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/webflow/block-construction-website-template"><img src="https://themestested.com/badge/webflow/block-construction-website-template.svg" alt="Block speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.