Impulse
Impulse is a Shopify theme by Archetype Themes ($500). Tested on 2026-11-07 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 79 for mobile speed and 88 for desktop speed, 91/91 for SEO and 91/93 for accessibility (mobile/desktop, 0–100). Those are medians across its 4 tested presets; mobile speed across every tested page ranges from 53 to 97. On its marketplace it is rated 4.8 out of 5 from 1,302 reviews.
Mobile79

Desktop99

Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 79 | 88 |
| SEO | 91 | 91 |
| Accessibility | 91 | 93 |
| Best practices | 96 | 96 |
Median of 4 presets · measured 216 times since 2026-11-06 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Impulse home page
Mobile
Speed 79 · 21 points to gain
- −13 Largest Contentful Paint medium effort
- −5.2 Cumulative Layout Shift medium effort
- −2.7 Total Blocking Time medium effort
- 150 ms Reduce unused CSS high effort
- 150 ms Reduce unused JavaScript high effort
SEO 77 · 23 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low effort
- −7.7 Image elements do not have `[alt]` attributes low effort
Accessibility 86 · 14 points to gain
- −5.1 Image elements do not have `[alt]` attributes low effort
- −3.5 `[aria-hidden="true"]` elements contain focusable descendents medium effort
- −3.5 Links do not have a discernible name medium effort
- −1.5 Heading elements are not in a sequentially-descending order medium effort
Desktop
Speed 99 · 1 points to gain
- −0.8 Largest Contentful Paint medium effort
SEO 77 · 23 points to gain
- −7.7 Document does not have a meta description low effort
- −7.7 Links do not have descriptive text low effort
- −7.7 Image elements do not have `[alt]` attributes low effort
Accessibility 90 · 10 points to gain
- −4.9 Image elements do not have `[alt]` attributes low effort
- −3.4 Links do not have a discernible name medium effort
- −1.5 Heading elements are not in a sequentially-descending order medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Apothecary demo ↗ | 76 | 95 | 92 | 91 | 95 | 94 | 2026-11-06 |
| category ↗ | 70 | 100 | 92 | 91 | 100 | 92 | 2026-11-07 |
| home ↗ | 79 | 85 | 90 | 91 | 85 | 94 | 2026-11-06 |
| product ↗ | 78 | 100 | 93 | 91 | 100 | 96 | 2026-11-07 |
| Dune demo ↗ | 60 | 92 | 81 | 76 | 92 | 84 | 2026-11-06 |
| category ↗ | 59 | 92 | 88 | 76 | 92 | 92 | 2026-11-07 |
| home ↗ | 53 | 85 | 74 | 67 | 85 | 77 | 2026-11-06 |
| product ↗ | 69 | 100 | 80 | 86 | 100 | 83 | 2026-11-07 |
| Impulse default demo ↗ | 83 | 90 | 95 | 85 | 90 | 95 | 2026-11-06 |
| category ↗ | 92 | 92 | 100 | 84 | 92 | 100 | 2026-11-07 |
| home ↗ | 79 | 77 | 86 | 99 | 77 | 90 | 2026-11-06 |
| product ↗ | 79 | 100 | 98 | 72 | 100 | 95 | 2026-11-07 |
| Terrain demo ↗ | 82 | 90 | 90 | 94 | 90 | 91 | 2026-11-06 |
| category ↗ | 97 | 92 | 97 | 98 | 92 | 97 | 2026-11-07 |
| home ↗ | 73 | 85 | 87 | 93 | 85 | 90 | 2026-11-06 |
| product ↗ | 76 | 92 | 87 | 92 | 92 | 87 | 2026-11-07 |