Astro themes ranked by mobile SEO

As of November 2026 (measured 2026-11-11), the most SEO-friendly Astro theme on mobile is 3dinterior by Tarik @Nearmelab, with a Google Lighthouse SEO score of 100 out of 100, followed by 8-BitQuest by AstroCraftThemes at 100 and Academia at 100. 1,303 Astro themes were tested on their own demo stores; the ranking above is live and changes as themes are re-tested.

On desktop, 3dinterior by Tarik @Nearmelab has the highest SEO score in November 2026 at 100 out of 100, then 8-BitQuest 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, 3dinterior by Tarik @Nearmelab has the highest mobile SEO score in November 2026 at 100 out of 100; 8-BitQuest is next at 100. 503 of the 1,303 tested Astro themes are free; the full list is at /astro/free.

In November 2026, the median mobile Lighthouse SEO score across 1,303 tested Astro themes is 100 out of 100, and 1,051 (81%) reach Google's "good" band of 90 or better. Google's bands are 90–100 good, 50–89 needs improvement and 0–49 poor.

1,051 Astro themes score 90 or better for mobile SEO in November 2026, led by 3dinterior (100), 8-BitQuest (100), Academia (100), Aether (100), AIAgency (100), Alexander’s astro tailwind daisyui starter (100), Almanac (100) and amazing mare blog (100). Scores are medians across each theme's tested presets.

3dinterior by Tarik @Nearmelab scores 100 out of 100 for mobile SEO and 100 on desktop in November 2026, measured with Google Lighthouse on its demo store. That places it first of 1,303 tested Astro themes. Its page at /theme/astro/3dinterior shows every page, preset and the audits behind the number.

In November 2026, 3dinterior scores 100 and 8-BitQuest scores 100 for mobile SEO; 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, Noel has the highest median mobile SEO score in November 2026: 100 across 63 themes. Vendor pages list every theme a vendor has on the rankings.

1,303 Astro themes have Lighthouse scores as of 2026-11-11. 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.

Lighthouse's SEO score checks the technical basics a theme controls — crawlable links, meta tags, mobile viewport, legible fonts, valid structured markup — and most Astro themes pass most of them, which is why SEO scores cluster high. Speed separates them: Google ranks on Core Web Vitals, so the best theme for rankings is one with a high SEO score and a high mobile speed score. 3dinterior leads on SEO in November 2026; the speed ranking is one click away.

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.