Vantage
Vantage is a Shopify theme by We are Underground ($150). Tested on 2026-11-07 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 57 for mobile speed and 79 for desktop speed, 97/97 for SEO and 94/86 for accessibility (mobile/desktop, 0–100). Those are medians across its 4 tested presets; mobile speed across every tested page ranges from 42 to 71. On its marketplace it is rated 4.8 out of 5 from 230 reviews.
Mobile63

Desktop80

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 57 | 79 |
| SEO | 97 | 97 |
| Accessibility | 94 | 86 |
| Best practices | 99 | 100 |
Median of 4 presets · measured 214 times since 2026-11-06 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Portofino home page
Mobile
Speed 63 · 37 points to gain
- −25 Largest Contentful Paint medium effort
- −8.4 Speed Index medium effort
- −3.3 First Contentful Paint medium effort
- 450 ms Reduce unused CSS high effort
- 450 ms Reduce unused JavaScript high effort
SEO 92 · 8 points to gain
- −7.7 Image elements do not have `[alt]` attributes low effort
Accessibility 91 · 9 points to gain
- −5.5 Image elements do not have `[alt]` attributes low effort
- −3.8 Links do not have a discernible name medium effort
Desktop
Speed 80 · 20 points to gain
- −13.8 Largest Contentful Paint medium effort
- −6.1 Speed Index medium effort
- −0.6 Total Blocking Time medium effort
SEO 92 · 8 points to gain
- −7.7 Image elements do not have `[alt]` attributes low effort
Accessibility 83 · 17 points to gain
- −4.8 Buttons do not have an accessible name medium effort
- −4.8 Image elements do not have `[alt]` attributes low effort
- −3.4 Links do not have a discernible name medium effort
- −3.4 Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`). low 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 | ||||||
| Vantage demo ↗ | 60 | 97 | 92 | 77 | 97 | 87 | 2026-11-07 |
| category ↗ | 70 | 100 | 92 | 89 | 100 | 83 | 2026-11-07 |
| home ↗ | 69 | 92 | 93 | 56 | 92 | 89 | 2026-11-07 |
| product ↗ | 42 | 100 | 92 | 85 | 100 | 88 | 2026-11-07 |
| Monza demo ↗ | 53 | 97 | 95 | 80 | 97 | 86 | 2026-11-07 |
| category ↗ | 71 | 100 | 95 | 92 | 100 | 87 | 2026-11-07 |
| home ↗ | 44 | 92 | 96 | 60 | 92 | 85 | 2026-11-07 |
| product ↗ | 44 | 100 | 95 | 87 | 100 | 87 | 2026-11-07 |
| Roma demo ↗ | 53 | 100 | 93 | 77 | 100 | 85 | 2026-11-06 |
| category ↗ | 69 | 100 | 95 | 91 | 100 | 87 | 2026-11-07 |
| home ↗ | 44 | 100 | 88 | 57 | 100 | 81 | 2026-11-06 |
| product ↗ | 47 | 100 | 95 | 84 | 100 | 87 | 2026-11-07 |
| Portofino default demo ↗ | 62 | 95 | 94 | 84 | 95 | 85 | 2026-11-04 |
| category ↗ | 70 | 92 | 95 | 87 | 92 | 86 | 2026-11-07 |
| home ↗ | 63 | 92 | 91 | 80 | 92 | 83 | 2026-11-04 |
| product ↗ | 52 | 100 | 95 | 84 | 100 | 87 | 2026-11-07 |