Flash
Flash is a WordPress theme by ThemeGrill (Free). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 97 for mobile speed and 99 for desktop speed, 50/50 for SEO and 93/96 for accessibility (mobile/desktop, 0–100). On its marketplace it is rated 4.9 out of 5 from 259 reviews.
Mobile97
Desktop99
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 97 | 99 |
| SEO | 50 | 50 |
| Accessibility | 93 | 96 |
| 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 — Flash home page
Mobile
Speed 97 · 3 points to gain
- −1.2 First Contentful Paint medium effort
- −1.1 Speed Index medium effort
- −0.5 Largest Contentful Paint medium effort
- 170 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 93 · 7 points to gain
- −7.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Desktop
Speed 99 · 1 points to gain
- −1.1 Speed Index 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 96 · 4 points to gain
- −4.5 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 | ||||||
| Flash default demo ↗ | 97 | 50 | 93 | 99 | 50 | 96 | 2026-09-12 |
| home ↗ | 97 | 50 | 93 | 99 | 50 | 96 | 2026-09-12 |
Show this score on your site
A live badge: it always shows Flash's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/wordpress/flash"><img src="https://themestested.com/badge/wordpress/flash.svg" alt="Flash speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.