Merchant Light
Merchant Light is a BigCommerce theme by BigCommerce ($195). Tested on 2026-11-07 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 55 for mobile speed and 73 for desktop speed, 61/61 for SEO and 70/65 for accessibility (mobile/desktop, 0–100).
Mobile48

Desktop59

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 55 | 73 |
| SEO | 61 | 61 |
| Accessibility | 70 | 65 |
| Best practices | 78 | 80 |
Single preset · measured 30 times since 2026-11-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Merchant-Light home page
Mobile
Speed 48 · 52 points to gain
- −25 Largest Contentful Paint medium effort
- −22.8 Cumulative Layout Shift medium effort
- −1.8 Total Blocking Time medium effort
- −1.8 Speed Index medium effort
- −0.7 First Contentful Paint medium effort
- 4.3 s Minify JavaScript low effort
- 1.1 s Reduce unused JavaScript high effort
- 150 ms Reduce unused CSS high effort
SEO 61 · 39 points to gain
- −31 Page is blocked from indexing low effort
- −7.7 Document does not have a meta description low effort
Accessibility 74 · 26 points to gain
- −5 Buttons do not have an accessible name medium effort
- −5 `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. low effort
- −3.5 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −3.5 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.5 Links rely on color to be distinguishable. medium effort
- −3.5 Touch targets do not have sufficient size or spacing. medium effort
Best practices 81 · 19 points to gain
- −19.2 Uses deprecated APIs medium effort
Desktop
Speed 59 · 41 points to gain
- −17 Largest Contentful Paint medium effort
- −16.5 Cumulative Layout Shift medium effort
- −7.5 Total Blocking Time medium effort
- 680 ms Minify JavaScript low effort
- 160 ms Reduce unused JavaScript high effort
SEO 61 · 39 points to gain
- −31 Page is blocked from indexing low effort
- −7.7 Document does not have a meta description low effort
Accessibility 71 · 29 points to gain
- −4.8 Buttons do not have an accessible name medium effort
- −4.8 `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. low effort
- −4.8 Select elements do not have associated label elements. medium effort
- −3.3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.3 Links rely on color to be distinguishable. medium effort
- −3.3 Links do not have a discernible name medium effort
Best practices 81 · 19 points to gain
- −19.2 Uses deprecated APIs medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Merchant-Light default demo ↗ | 55 | 61 | 70 | 73 | 61 | 65 | 2026-11-07 |
| category ↗ | 67 | 61 | 65 | 82 | 61 | 61 | 2026-11-07 |
| home ↗ | 48 | 61 | 74 | 59 | 61 | 71 | 2026-11-07 |
| product ↗ | 49 | 61 | 72 | 79 | 61 | 63 | 2026-11-07 |