SURFup Light
SURFup Light is a BigCommerce theme by Halothemes ($245). Tested on 2026-11-07 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 64 for mobile speed and 88 for desktop speed, 85/85 for SEO and 84/88 for accessibility (mobile/desktop, 0–100).
Mobile65

Desktop97

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 64 | 88 |
| SEO | 85 | 85 |
| Accessibility | 84 | 88 |
| Best practices | 97 | 99 |
Single preset · measured 32 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — SURFup-Light home page
Mobile
Speed 65 · 35 points to gain
- −22.8 Largest Contentful Paint medium effort
- −6.9 First Contentful Paint medium effort
- −4.1 Speed Index medium effort
- −1.5 Total Blocking Time medium effort
- 600 ms Reduce unused CSS high effort
- 600 ms Reduce unused JavaScript high effort
SEO 85 · 15 points to gain
- −7.7 Links do not have descriptive text low effort
- −7.7 Links are not crawlable medium effort
Accessibility 74 · 26 points to gain
- −4.2 `[aria-*]` attributes do not match their roles medium effort
- −4.2 Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children. medium effort
- −4.2 `[aria-*]` attributes do not have valid values medium effort
- −2.9 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −2.9 ARIA input fields do not have accessible names medium effort
- −2.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Best practices 96 · 4 points to gain
- −3.8 Serves images with low resolution low effort
Desktop
Speed 97 · 3 points to gain
- −2.5 Largest Contentful Paint medium effort
SEO 85 · 15 points to gain
- −7.7 Links do not have descriptive text low effort
- −7.7 Links are not crawlable medium effort
Accessibility 88 · 12 points to gain
- −3.4 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −3.4 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.4 Touch targets do not have sufficient size or spacing. medium effort
- −1.5 Heading elements are not in a sequentially-descending order medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| SURFup-Light default demo ↗ | 64 | 85 | 84 | 88 | 85 | 88 | 2026-10-31 |
| category ↗ | 70 | 85 | 88 | 98 | 85 | 88 | 2026-10-31 |
| home ↗ | 65 | 85 | 74 | 97 | 85 | 88 | 2026-11-07 |
| product ↗ | 56 | 85 | 89 | 70 | 85 | 89 | 2026-10-31 |