Publisher
Publisher is a Shopify theme by Shopify (Free). Tested on 2026-10-12 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 79 for mobile speed and 95 for desktop speed, 95/95 for SEO and 100/100 for accessibility (mobile/desktop, 0–100). On its marketplace it is rated 3.3 out of 5 from 6 reviews.
Mobile75
Desktop92
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 79 | 95 |
| SEO | 95 | 95 |
| Accessibility | 100 | 100 |
| Best practices | 95 | 96 |
Single preset · measured 12 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — publisher home page
Mobile
Speed 75 · 25 points to gain
- −19.8 Largest Contentful Paint medium effort
- −3.3 Cumulative Layout Shift medium effort
- −2.2 First Contentful Paint medium effort
- 150 ms Reduce unused JavaScript high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Desktop
Speed 92 · 8 points to gain
- −7 Cumulative Layout Shift medium effort
- −1.3 Largest Contentful Paint medium effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low 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 | ||||||
| publisher default demo ↗ | 79 | 95 | 100 | 95 | 95 | 100 | 2026-10-12 |
| category ↗ | 94 | 92 | 100 | 99 | 92 | 100 | 2026-10-12 |
| home ↗ | 75 | 92 | 100 | 92 | 92 | 100 | 2026-10-12 |
| product ↗ | 69 | 100 | 100 | 93 | 100 | 100 | 2026-10-12 |
Show this score on your site
A live badge: it always shows Publisher's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/shopify/publisher"><img src="https://themestested.com/badge/shopify/publisher.svg" alt="Publisher speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.