Sumi
Sumi is a Astro theme by kpab (Free). Tested on 2026-10-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 67 for mobile speed and 63 for desktop speed, 100/100 for SEO and 100/100 for accessibility (mobile/desktop, 0–100). Note: its demo home page is light — 164 KB in 5 requests — where a stocked storefront is usually 1–4 MB, so the speed score flatters it.
Mobile67
Desktop63
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 67 | 63 |
| SEO | 100 | 100 |
| Accessibility | 100 | 100 |
| Best practices | 100 | 100 |
Single preset · measured 4 times since 2026-10-12 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Sumi home page
Mobile
Speed 67 · 33 points to gain
- −29.4 Total Blocking Time medium effort
- −3.8 Speed Index medium effort
Desktop
Speed 63 · 37 points to gain
- −30 Total Blocking Time medium effort
- −7.2 Speed Index medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Sumi default demo ↗ | 67 | 100 | 100 | 63 | 100 | 100 | 2026-10-12 |
| home ↗ | 67 | 100 | 100 | 63 | 100 | 100 | 2026-10-12 |
Show this score on your site
A live badge: it always shows Sumi's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/sumi"><img src="https://themestested.com/badge/astro/sumi.svg" alt="Sumi speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.