Master
Master is a Shopify theme by Shine Dezign Infonet ($100). Tested on 2026-09-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 72 for mobile speed and 89 for desktop speed, 100/100 for SEO and 95/94 for accessibility (mobile/desktop, 0–100). On its marketplace it is rated 5.0 out of 5 from 4 reviews. Note: its demo home page is heavy — 21.4 MB — heavier than a typical store, so the speed score may understate the theme.
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 72 | 89 |
| SEO | 100 | 100 |
| Accessibility | 95 | 94 |
| Best practices | 95 | 92 |
Single preset · measured 6 times since 2026-09-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — master home page
Mobile
Speed 64 · 36 points to gain
- −23.3 Largest Contentful Paint medium effort
- −5.2 Speed Index medium effort
- −3.3 First Contentful Paint medium effort
- −2.7 Total Blocking Time medium effort
- −2 Cumulative Layout Shift medium effort
- 150 ms Reduce unused JavaScript high effort
Accessibility 99 · 1 points to gain
- −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 75 · 25 points to gain
- −12.9 Total Blocking Time medium effort
- −7.5 Largest Contentful Paint medium effort
- −4.4 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
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| master default demo ↗ | 72 | 100 | 95 | 89 | 100 | 94 | 2026-09-12 |
| category ↗ | 80 | 100 | 90 | 97 | 100 | 89 | 2026-09-12 |
| home ↗ | 64 | 100 | 99 | 75 | 100 | 99 | 2026-09-12 |
| product ↗ | 72 | 100 | 95 | 94 | 100 | 95 | 2026-09-12 |
Show this score on your site
A live badge: it always shows Master's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/shopify/master"><img src="https://themestested.com/badge/shopify/master.svg" alt="Master speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.