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

Sleek

Sleek is a Shopify theme by FoxEcom ($350). Tested on 2026-11-07 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 79 for mobile speed and 93 for desktop speed, 97/92 for SEO and 94/93 for accessibility (mobile/desktop, 0–100). Those are medians across its 5 tested presets; mobile speed across every tested page ranges from 66 to 92. On its marketplace it is rated 5.0 out of 5 from 603 reviews.

Mobile76
Sleek home page on mobile
Desktop79
Sleek home page on desktop

Scores

MobileDesktop
Speed7993
SEO9792
Accessibility9493
Best practices9999

Median of 5 presets · measured 270 times since 2026-11-06 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.

Why not 100 — Jumped home page

Mobile

Speed 76 · 24 points to gain

  • −12.6 Total Blocking Time medium effort
  • −8.3 Speed Index medium effort
  • −3 Largest Contentful Paint medium effort

Accessibility 93 · 7 points to gain

  • −3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
  • −3 Links do not have a discernible name medium effort
  • −1.3 Heading elements are not in a sequentially-descending order medium effort

Best practices 96 · 4 points to gain

  • −3.8 Browser errors were logged to the console medium effort

Desktop

Speed 79 · 21 points to gain

  • −13.2 Total Blocking Time medium effort
  • −7.7 Speed Index medium effort

SEO 92 · 8 points to gain

  • −7.7 Links do not have descriptive text low effort

Accessibility 93 · 7 points to gain

  • −3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
  • −3 Links do not have a discernible name medium effort
  • −1.3 Heading elements are not in a sequentially-descending order medium effort

Best practices 96 · 4 points to gain

  • −3.8 Browser errors were logged to the console medium effort

Presets and pages

Preset / pageSpeedSEOA11ySpeedSEOA11yTested
mobiledesktop
Glint demo ↗ 859794969793 2026-11-07
category ↗ 929295989296 2026-11-07
home ↗ 91100959510095 2026-11-07
product ↗ 73100919510087 2026-11-07
Wildpeak demo ↗ 819794939793 2026-11-07
category ↗ 73100959710096 2026-11-07
home ↗ 90100978710097 2026-11-07
product ↗ 809291969287 2026-11-07
Modiva demo ↗ 789794959293 2026-11-07
category ↗ 8710095979296 2026-11-07
home ↗ 6610096929296 2026-11-07
product ↗ 819291969287 2026-11-07
Jumped default demo ↗ 749793899092 2026-11-06
category ↗ 729295988596 2026-11-07
home ↗ 7610093799293 2026-11-06
product ↗ 7410091909287 2026-11-07
Sleek demo ↗ 7910094869293 2026-11-07
category ↗ 7910095989296 2026-11-07
home ↗ 8110096749296 2026-11-07
product ↗ 7610092879288 2026-11-07

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Sleek: mobile speed 79 on Themestested
<a href="https://themestested.com/theme/shopify/sleek"><img src="https://themestested.com/badge/shopify/sleek.svg" alt="Sleek speed score on Themestested" height="20"></a>

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