Firefly
Firefly is a Astro theme by XIAYE (Free). Tested on 2026-09-13 with Google Lighthouse via PageSpeed Insights on its own demo store, it scores 88 for mobile speed and 99 for desktop speed, 100/100 for SEO and 96/97 for accessibility (mobile/desktop, 0–100).
Mobile88
Desktop99
Scores
| Mobile | Desktop | |
|---|---|---|
| Speed | 88 | 99 |
| SEO | 100 | 100 |
| Accessibility | 96 | 97 |
| Best practices | 100 | 100 |
Single preset · measured 2 times since 2026-09-13 · Lighthouse via PageSpeed Insights · 0–100, 90+ is good.
Why not 100 — Firefly home page
Mobile
Speed 88 · 12 points to gain
- −7.8 Largest Contentful Paint medium effort
- −3 Speed Index medium effort
- −1.3 First Contentful Paint medium effort
Accessibility 96 · 4 points to gain
- −4.2 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Desktop
Speed 99 · 1 points to gain
- −0.5 Largest Contentful Paint medium effort
Accessibility 97 · 3 points to gain
- −3.3 Background and foreground colors do not have a sufficient contrast ratio. medium effort
Presets and pages
| Preset / page | Speed | SEO | A11y | Speed | SEO | A11y | Tested |
|---|---|---|---|---|---|---|---|
| mobile | desktop | ||||||
| Firefly default demo ↗ | 88 | 100 | 96 | 99 | 100 | 97 | 2026-09-13 |
| home ↗ | 88 | 100 | 96 | 99 | 100 | 97 | 2026-09-13 |
Show this score on your site
A live badge: it always shows Firefly's current score and links back here. Paste this where the theme is sold or documented.
<a href="https://themestested.com/theme/astro/firefly"><img src="https://themestested.com/badge/astro/firefly.svg" alt="Firefly speed score on Themestested" height="20"></a>
Add ?device=d for the desktop score, or ?metric=seo / ?metric=a11y for SEO or accessibility.