Concept
Concept is a Shopify theme by RoarTheme ($400). Tested on 2026-09-11 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 79 for mobile speed and 95 for desktop speed, 97/97 for SEO and 99/99 for accessibility (mobile/desktop, 0–100). Those are medians across its 2 tested presets; mobile speed across every tested page ranges from 67 to 84. On its marketplace it is rated 5.0 out of 5 from 647 reviews.
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 79 | 95 |
| SEO | 97 | 97 |
| Accessibility | 99 | 99 |
| Best practices | 94 | 94 |
Median of 2 presets · measured 12 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Inova home page
Mobile
Speed 67 · 33 points to gain
- −14 Largest Contentful Paint medium effort
- −10.2 Total Blocking Time medium effort
- −4.9 Speed Index medium effort
- −4 First Contentful Paint medium effort
- 380 ms Reduce unused CSS high effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Desktop
Speed 95 · 5 points to gain
- −3.3 Largest Contentful Paint medium effort
- −1.6 Speed Index medium effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Inova default demo ↗ | 78 | 97 | 98 | 94 | 97 | 98 | 2026-09-11 |
| category ↗ | 84 | 92 | 100 | 93 | 92 | 100 | 2026-09-11 |
| home ↗ | 67 | 100 | 100 | 95 | 100 | 100 | 2026-09-11 |
| product ↗ | 83 | 100 | 94 | 95 | 100 | 95 | 2026-09-11 |
| Concept demo ↗ | 79 | 97 | 99 | 96 | 97 | 99 | 2026-09-11 |
| category ↗ | 72 | 92 | 100 | 98 | 92 | 100 | 2026-09-11 |
| home ↗ | 83 | 100 | 97 | 94 | 100 | 97 | 2026-09-11 |
| product ↗ | 81 | 100 | 99 | 97 | 100 | 99 | 2026-09-11 |
Show this score on your site
A live badge: it always shows Concept's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/shopify/concept"><img src="https://themestested.com/badge/shopify/concept.svg" alt="Concept speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.