Mr Parker
Mr Parker is a Shopify theme by We are Underground ($120). Tested on 2026-11-08 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 74 for mobile speed and 91 for desktop speed, 96/96 for SEO and 88/85 for accessibility (mobile/desktop, 0–100). Those are medians across its 4 tested presets; mobile speed across every tested page ranges from 47 to 97. On its marketplace it is rated 4.8 out of 5 from 207 reviews.
Mobile85

Desktop99

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 74 | 91 |
| SEO | 96 | 96 |
| Accessibility | 88 | 85 |
| Best practices | 97 | 99 |
Median of 4 presets · measured 216 times since 2026-10-02 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Arena home page
Mobile
Speed 85 · 15 points to gain
- −11 Largest Contentful Paint medium effort
- −2.3 Speed Index medium effort
- −2.1 Total Blocking Time medium effort
- 300 ms Reduce unused CSS high effort
Accessibility 90 · 10 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
- −3.3 Links do not have a discernible name medium effort
Desktop
Speed 99 · 1 points to gain
- −0.7 Speed Index medium effort
Accessibility 83 · 17 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
- −3.3 Links do not have a discernible name medium effort
- −3.3 Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). low effort
- −3.3 Touch targets do not have sufficient size or spacing. medium effort
Best practices 96 · 4 points to gain
- −3.8 Browser errors were logged to the console medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Spa demo ↗ | 67 | 100 | 90 | 86 | 100 | 88 | 2026-11-07 |
| category ↗ | 76 | 100 | 92 | 94 | 100 | 88 | 2026-11-07 |
| home ↗ | 77 | 100 | 93 | 81 | 100 | 90 | 2026-11-07 |
| product ↗ | 47 | 100 | 84 | 83 | 100 | 87 | 2026-11-07 |
| Arena default demo ↗ | 69 | 97 | 86 | 96 | 97 | 81 | 2026-11-07 |
| category ↗ | 68 | 92 | 89 | 94 | 92 | 82 | 2026-11-07 |
| home ↗ | 85 | 100 | 90 | 99 | 100 | 83 | 2026-11-07 |
| product ↗ | 54 | 100 | 78 | 96 | 100 | 77 | 2026-11-07 |
| Nest demo ↗ | 81 | 95 | 85 | 90 | 95 | 81 | 2026-11-07 |
| category ↗ | 78 | 92 | 89 | 94 | 92 | 82 | 2026-11-08 |
| home ↗ | 97 | 92 | 89 | 82 | 92 | 85 | 2026-11-07 |
| product ↗ | 67 | 100 | 78 | 95 | 100 | 77 | 2026-11-08 |
| Mr Parker demo ↗ | 78 | 95 | 92 | 91 | 95 | 90 | 2026-11-07 |
| category ↗ | 75 | 92 | 95 | 91 | 92 | 92 | 2026-11-07 |
| home ↗ | 79 | 92 | 93 | 94 | 92 | 93 | 2026-11-07 |
| product ↗ | 79 | 100 | 87 | 89 | 100 | 84 | 2026-11-07 |