themestestedbyWhirlwind eCommerce logo — Shopify and BigCommerce ecommerce development agencyWhirlwind eCommerce
NextGen Bold theme preview

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
NextGen Bold home page on mobile
Desktop98
NextGen Bold home page on desktop

Scores

MobileDesktop
Speed6992
SEO9090
Accessibility8780
Best practices6872

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 / pageSpeedSEOA11ySpeedSEOA11yTested
mobiledesktop
NextGen-Bold default demo ↗ 699087929080 2026-11-07
category ↗ 869291999279 2026-11-10
home ↗ 579290989285 2026-11-07
product ↗ 648579808577 2026-11-10

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NextGen Bold: mobile speed 69 on Themestested
<a href="https://themestested.com/theme/bigcommerce/nextgen-bold"><img src="https://themestested.com/badge/bigcommerce/nextgen-bold.svg" alt="NextGen Bold speed score on Themestested" height="20"></a>

Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.