Shark
Shark is a Shopify theme by Shine Dezign Infonet ($200). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 69 for mobile speed and 82 for desktop speed, 97/97 for SEO and 96/93 for accessibility (mobile/desktop, 0–100). Those are medians across its 3 tested presets; mobile speed across every tested page ranges from 52 to 84. On its marketplace it is rated 4.6 out of 5 from 11 reviews.
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 69 | 82 |
| SEO | 97 | 97 |
| Accessibility | 96 | 93 |
| Best practices | 93 | 93 |
Median of 3 presets · measured 18 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Shark home page
Mobile
Speed 69 · 31 points to gain
- −23 Largest Contentful Paint medium effort
- −3.9 Total Blocking Time medium effort
- −2 First Contentful Paint medium effort
- −1.7 Speed Index medium effort
Accessibility 99 · 1 points to gain
- −1.4 Heading elements are not in a sequentially-descending order medium effort
Best practices 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Desktop
Speed 93 · 7 points to gain
- −4.7 Largest Contentful Paint medium effort
- −1.2 Speed Index medium effort
Accessibility 92 · 8 points to gain
- −3.3 Elements use prohibited ARIA attributes medium effort
- −3.3 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 92 · 8 points to gain
- −3.8 Browser errors were logged to the console medium effort
- −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Antique demo ↗ | 69 | 95 | 96 | 72 | 95 | 93 | 2026-09-12 |
| category ↗ | 84 | 92 | 95 | 93 | 92 | 92 | 2026-09-12 |
| home ↗ | 62 | 92 | 98 | 75 | 92 | 95 | 2026-09-12 |
| product ↗ | 60 | 100 | 95 | 49 | 100 | 92 | 2026-09-12 |
| Boston demo ↗ | 78 | 97 | 94 | 82 | 97 | 93 | 2026-09-12 |
| category ↗ | 84 | 92 | 95 | 93 | 92 | 92 | 2026-09-12 |
| home ↗ | 68 | 100 | 92 | 64 | 100 | 95 | 2026-09-12 |
| product ↗ | 83 | 100 | 95 | 89 | 100 | 92 | 2026-09-12 |
| Shark default demo ↗ | 62 | 97 | 96 | 94 | 97 | 92 | 2026-09-11 |
| category ↗ | 66 | 92 | 95 | 92 | 92 | 92 | 2026-09-12 |
| home ↗ | 69 | 100 | 99 | 93 | 100 | 92 | 2026-09-11 |
| product ↗ | 52 | 100 | 95 | 96 | 100 | 92 | 2026-09-12 |
Show this score on your site
A live badge: it always shows Shark's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/shopify/shark"><img src="https://themestested.com/badge/shopify/shark.svg" alt="Shark speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.