Strong
Strong is a Shopify theme by BoostifyThemes ($100). Tested on 2026-10-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 64 for mobile speed and 86 for desktop speed, 97/97 for SEO and 90/93 for accessibility (mobile/desktop, 0–100). Those are medians across its 3 tested presets; mobile speed across every tested page ranges from 56 to 93. On its marketplace it is rated 5.0 out of 5 from 7 reviews.
Mobile56

Desktop88

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 64 | 86 |
| SEO | 97 | 97 |
| Accessibility | 90 | 93 |
| Best practices | 96 | 96 |
Median of 3 presets · measured 36 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Strong home page
Mobile
Speed 56 · 44 points to gain
- −24.5 Largest Contentful Paint medium effort
- −9.5 Cumulative Layout Shift medium effort
- −5.3 Speed Index medium effort
- −2.7 Total Blocking Time medium effort
- −1.8 First Contentful Paint medium effort
- 300 ms Reduce unused CSS high effort
SEO 92 · 8 points to gain
- −7.7 Links do not have descriptive text low effort
Accessibility 90 · 10 points to gain
- −4.8 Buttons do not have an accessible name medium effort
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −1.4 Heading elements are not in a sequentially-descending order medium effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Desktop
Speed 88 · 12 points to gain
- −7.8 Largest Contentful Paint medium effort
- −4.7 Speed Index medium effort
SEO 92 · 8 points to gain
- −7.7 Links do not have descriptive text low effort
Accessibility 92 · 8 points to gain
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.4 Touch targets do not have sufficient size or spacing. medium effort
- −1.4 Heading elements are not in a sequentially-descending order 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 | ||||||
| Bend demo ↗ | 64 | 97 | 90 | 88 | 97 | 93 | 2026-10-12 |
| category ↗ | 70 | 100 | 90 | 82 | 100 | 92 | 2026-10-12 |
| home ↗ | 60 | 92 | 90 | 88 | 92 | 92 | 2026-10-12 |
| product ↗ | 63 | 100 | 91 | 93 | 100 | 95 | 2026-10-12 |
| Strong default demo ↗ | 63 | 97 | 90 | 86 | 97 | 93 | 2026-10-12 |
| category ↗ | 68 | 100 | 90 | 78 | 100 | 92 | 2026-10-12 |
| home ↗ | 56 | 92 | 90 | 88 | 92 | 92 | 2026-10-12 |
| product ↗ | 64 | 100 | 91 | 92 | 100 | 95 | 2026-10-12 |
| Velvet demo ↗ | 77 | 100 | 90 | 85 | 100 | 93 | 2026-10-12 |
| category ↗ | 70 | 100 | 90 | 81 | 100 | 92 | 2026-10-12 |
| home ↗ | 93 | 100 | 90 | 81 | 100 | 92 | 2026-10-12 |
| product ↗ | 67 | 100 | 91 | 93 | 100 | 95 | 2026-10-12 |