Astro themes ranked by mobile speed

As of September 2026 (measured 2026-09-15), the fastest Astro theme on mobile is 8-BitQuest by AstroCraftThemes, with a Google Lighthouse speed score of 100 out of 100, followed by A Quiet Publication by Liyuk at 100 and Agency10 at 100. 1,007 Astro themes were tested on their own demo stores; the ranking above is live and changes as themes are re-tested.

On desktop, 8-BitQuest by AstroCraftThemes has the highest speed score in September 2026 at 100 out of 100, then A Quiet Publication at 100. Desktop scores run higher than mobile for the same theme because Lighthouse's mobile test simulates a mid-range phone on a slow 4G connection; mobile is the score Google ranks by.

Among free Astro themes, 8-BitQuest by AstroCraftThemes has the highest mobile speed score in September 2026 at 100 out of 100; A Quiet Publication is next at 100. 438 of the 1,007 tested Astro themes are free; the full list is at /astro/free.

In September 2026, the median mobile Lighthouse performance score across 1,007 tested Astro themes is 91 out of 100, and 511 (51%) reach Google's "good" band of 90 or better. Google's bands are 90–100 good, 50–89 needs improvement and 0–49 poor.

511 Astro themes score 90 or better for mobile speed in September 2026, led by 8-BitQuest (100), A Quiet Publication (100), Agency10 (100), AI Chat Bot (100), AIAgency (100), Akali Portfolio (100), Maria (100) and Alexander’s astro tailwind daisyui starter (100). Scores are medians across each theme's tested presets.

On its demo store's home page in September 2026, ASTRObash by jjunlob074 has the fastest Largest Contentful Paint among the Astro themes scoring 90 or better: 754 ms LCP on mobile with a Cumulative Layout Shift of 0.000. Google's thresholds are 2.5 s for LCP and 0.1 for CLS; every theme's page lists its vitals per device.

8-BitQuest by AstroCraftThemes scores 100 out of 100 for mobile speed and 100 on desktop in September 2026, measured with Google Lighthouse on its demo store. That places it first of 1,007 tested Astro themes. Its page at /theme/astro/8-bitquest shows every page, preset and the audits behind the number.

In September 2026, 8-BitQuest scores 100 and A Quiet Publication scores 100 for mobile speed; on desktop it is 100 against 100. Two points is inside Lighthouse's run-to-run variation, so treat them as level on this measure. Pick both in the rankings and press Compare for every score side by side.

Among vendors with two or more tested Astro themes, David Large has the highest median mobile speed score in September 2026: 100 across 3 themes. Vendor pages list every theme a vendor has on the rankings.

1,007 Astro themes have Lighthouse scores as of 2026-09-15. Every theme is re-tested on a schedule set by its popularity — the most used every week, the long tail every one to two months — and every run is kept, so a theme's page shows its history. New themes are picked up from the marketplaces daily.

Yes. Page speed is part of Google's ranking systems through Core Web Vitals, and slower pages convert fewer visitors. The theme sets the floor: apps, images and tracking scripts only add to what it loads. A theme that scores 90 or better on mobile on its own demo leaves room for a real store; one that scores 50 on an empty demo has none. Test your own store at /test-my-store.

Each theme's own demo store is run through Google's PageSpeed Insights API (Lighthouse) on a simulated mobile phone and on desktop, for the home page and, on store platforms, a collection page and a product page. A theme's score is the median of its presets; a preset's is the mean of its pages. Dead, password-protected and cloaked demos are excluded before they can score. The full method is at /methodology.