NextGen Bold
NextGen Bold is a BigCommerce theme by Lonestar Templates ($195). Tested on 2026-11-10 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 69 for mobile speed and 92 for desktop speed, 90/90 for SEO and 87/80 for accessibility (mobile/desktop, 0–100).
Mobile57

Desktop98

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 69 | 92 |
| SEO | 90 | 90 |
| Accessibility | 87 | 80 |
| Best practices | 68 | 72 |
Single preset · measured 30 times since 2026-11-07 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — NextGen-Bold home page
Mobile
Speed 57 · 43 points to gain
- −23.3 Cumulative Layout Shift medium effort
- −15.8 Largest Contentful Paint medium effort
- −1.8 Total Blocking Time medium effort
- −1.3 Speed Index medium effort
- −0.8 First Contentful Paint medium effort
- 580 ms Reduce unused CSS high effort
- 450 ms Reduce unused JavaScript high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Accessibility 90 · 10 points to gain
- −3.1 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3.1 Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). low effort
- −3.1 Touch targets do not have sufficient size or spacing. medium effort
- −1.3 Document does not have a main landmark. medium effort
Best practices 77 · 23 points to gain
- −19.2 Uses deprecated APIs medium effort
- −3.8 Serves images with low resolution low effort
Desktop
Speed 98 · 2 points to gain
- −1.5 Largest Contentful Paint medium effort
- 130 ms Reduce unused CSS high effort
SEO 92 · 8 points to gain
- −7.7 Document does not have a meta description low effort
Accessibility 85 · 15 points to gain
- −4.3 Input buttons do not have discernible text. medium effort
- −3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
- −3 Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). low effort
- −3 Touch targets do not have sufficient size or spacing. medium effort
- −1.3 Document does not have a main landmark. 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 | ||||||
| NextGen-Bold default demo ↗ | 69 | 90 | 87 | 92 | 90 | 80 | 2026-11-07 |
| category ↗ | 86 | 92 | 91 | 99 | 92 | 79 | 2026-11-10 |
| home ↗ | 57 | 92 | 90 | 98 | 92 | 85 | 2026-11-07 |
| product ↗ | 64 | 85 | 79 | 80 | 85 | 77 | 2026-11-10 |