Nebula Eco
Nebula Eco is a BigCommerce theme by epicShops ($400). Tested on 2026-11-10 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 66 for mobile speed and 83 for desktop speed, 87/87 for SEO and 94/92 for accessibility (mobile/desktop, 0–100).
Mobile63
Desktop78
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 66 | 83 |
| SEO | 87 | 87 |
| Accessibility | 94 | 92 |
| Best practices | 99 | 99 |
Single preset · measured 30 times since 2026-11-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Nebula-Eco home page
Mobile
Speed 63 · 37 points to gain
- −25 Largest Contentful Paint medium effort
- −7.2 Speed Index medium effort
- −4.2 Total Blocking Time medium effort
- −0.9 First Contentful Paint medium effort
- 2.0 s Reduce unused JavaScript high effort
- 540 ms Reduce unused CSS high effort
- 150 ms Minify JavaScript low effort
SEO 92 · 8 points to gain
- −7.7 Links are not crawlable medium effort
Accessibility 94 · 6 points to gain
- −3.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.2 Links do not have a discernible name medium effort
Desktop
Speed 78 · 22 points to gain
- −10.8 Largest Contentful Paint medium effort
- −9.3 Cumulative Layout Shift medium effort
- −2.1 Speed Index medium effort
SEO 92 · 8 points to gain
- −7.7 Links are not crawlable medium effort
Accessibility 93 · 7 points to gain
- −3.3 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −3.3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Nebula-Eco default demo ↗ | 66 | 87 | 94 | 83 | 87 | 92 | 2026-11-07 |
| category ↗ | 68 | 85 | 96 | 81 | 85 | 93 | 2026-11-10 |
| home ↗ | 63 | 92 | 94 | 78 | 92 | 93 | 2026-11-07 |
| product ↗ | 66 | 85 | 93 | 89 | 85 | 90 | 2026-11-10 |
Show this score on your site
A live badge: it always shows Nebula Eco's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/bigcommerce/nebula-eco"><img src="https://themestested.com/badge/bigcommerce/nebula-eco.svg" alt="Nebula Eco speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.