Radian
Radian is a Shopify theme by Axiom Themes ($290). Tested on 2026-11-02 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 73 for mobile speed and 92 for desktop speed, 96/96 for SEO and 98/96 for accessibility (mobile/desktop, 0–100). Those are medians across its 4 tested presets; mobile speed across every tested page ranges from 59 to 80. Note: its demo home page is heavy — 37.5 MB — heavier than a typical store, so the speed score may understate the theme.
Mobile77

Desktop97

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 73 | 92 |
| SEO | 96 | 96 |
| Accessibility | 98 | 96 |
| Best practices | 93 | 96 |
Median of 4 presets · measured 24 times since 2026-11-02 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — radian home page
Mobile
Speed 77 · 23 points to gain
- −18.8 Largest Contentful Paint medium effort
- −2.2 First Contentful Paint medium effort
- −2.1 Speed Index medium effort
SEO 85 · 15 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low 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 97 · 3 points to gain
- −1.5 Largest Contentful Paint medium effort
- −1.1 Speed Index medium effort
SEO 85 · 15 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low 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 | ||||||
| fearless demo ↗ | 68 | 95 | 98 | 82 | 95 | 96 | 2026-09-30 |
| category ↗ | 71 | 92 | 99 | 80 | 92 | 99 | 2026-09-30 |
| home ↗ | 59 | 92 | 94 | 74 | 92 | 94 | 2026-09-30 |
| product ↗ | 74 | 100 | 100 | 93 | 100 | 95 | 2026-09-30 |
| peony demo ↗ | 70 | 97 | 94 | 95 | 97 | 92 | 2026-10-13 |
| category ↗ | 75 | 100 | 96 | 93 | 100 | 96 | 2026-10-13 |
| home ↗ | 73 | 92 | 94 | 96 | 92 | 94 | 2026-10-13 |
| product ↗ | 61 | 100 | 92 | 96 | 100 | 87 | 2026-10-13 |
| radian default demo ↗ | 76 | 92 | 97 | 97 | 92 | 96 | 2026-09-16 |
| category ↗ | 73 | 92 | 99 | 97 | 92 | 99 | 2026-09-16 |
| home ↗ | 77 | 85 | 100 | 97 | 85 | 100 | 2026-09-16 |
| product ↗ | 79 | 100 | 92 | 98 | 100 | 88 | 2026-09-16 |
| vitrine demo ↗ | 77 | 100 | 99 | 88 | 100 | 99 | 2026-11-02 |
| category ↗ | 79 | 100 | 100 | 98 | 100 | 100 | 2026-11-02 |
| home ↗ | 71 | 100 | 97 | 70 | 100 | 97 | 2026-11-02 |
| product ↗ | 80 | 100 | 100 | 96 | 100 | 100 | 2026-11-02 |