themestestedbyWhirlwind eCommerce logo — Shopify and BigCommerce ecommerce development agencyWhirlwind eCommerce
Supermarket Yellow theme preview

Supermarket Yellow

Supermarket Yellow is a BigCommerce theme by Papathemes ($195). Tested on 2026-11-10 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 60 for mobile speed and 80 for desktop speed, 59/59 for SEO and 89/88 for accessibility (mobile/desktop, 0–100). Note: its demo home page is heavy — 6.9 MB — heavier than a typical store, so the speed score may understate the theme.

Mobile44
Supermarket Yellow home page on mobile
Desktop58
Supermarket Yellow home page on desktop

Scores

MobileDesktop
Speed6080
SEO5959
Accessibility8988
Best practices9191

Single preset · measured 30 times since 2026-09-11 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Why not 100 — Supermarket-Yellow home page

Mobile

Speed 44 · 56 points to gain

  • −25 Largest Contentful Paint medium effort
  • −11.1 Total Blocking Time medium effort
  • −10 First Contentful Paint medium effort
  • −10 Speed Index medium effort
  • 12.9 s Reduce unused JavaScript high effort
  • 1.7 s Reduce unused CSS high effort

SEO 61 · 39 points to gain

  • −31 Page is blocked from indexing low effort
  • −7.7 Links do not have descriptive text low effort

Accessibility 86 · 14 points to gain

  • −4.1 `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. low effort
  • −2.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
  • −2.9 Links do not have a discernible name medium effort
  • −2.9 Touch targets do not have sufficient size or spacing. medium effort
  • −1.2 Heading elements are not in a sequentially-descending order medium effort

Best practices 77 · 23 points to gain

  • −19.2 Uses third-party cookies high effort
  • −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort

Desktop

Speed 58 · 42 points to gain

  • −26.7 Total Blocking Time medium effort
  • −9.4 Speed Index medium effort
  • −5.5 Largest Contentful Paint medium effort
  • 120 ms Reduce unused JavaScript high effort

SEO 61 · 39 points to gain

  • −31 Page is blocked from indexing low effort
  • −7.7 Links do not have descriptive text low effort

Accessibility 86 · 14 points to gain

  • −4.1 `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. low effort
  • −2.9 Background and foreground colors do not have a sufficient contrast ratio. medium effort
  • −2.9 Links do not have a discernible name medium effort
  • −2.9 Touch targets do not have sufficient size or spacing. medium effort
  • −1.2 Heading elements are not in a sequentially-descending order medium effort

Best practices 77 · 23 points to gain

  • −19.2 Uses third-party cookies high effort
  • −3.8 Issues were logged in the `Issues` panel in Chrome Devtools high effort

Presets and pages

Preset / pageSpeedSEOA11ySpeedSEOA11yTested
mobiledesktop
Supermarket-Yellow default demo ↗ 605989805988 2026-11-07
category ↗ 766191946189 2026-11-10
home ↗ 446186586186 2026-11-07
product ↗ 595489885489 2026-11-10

Show this score on your site

A live badge: it always shows Supermarket Yellow's current score and links back here. Paste this where the theme is sold or documented.

Supermarket Yellow: mobile speed 60 on Themestested
<a href="https://themestested.com/theme/bigcommerce/supermarket-yellow"><img src="https://themestested.com/badge/bigcommerce/supermarket-yellow.svg" alt="Supermarket Yellow speed score on Themestested" height="20"></a>

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