Squarespace themes ranked by mobile SEO

As of September 2026 (measured 2026-09-15), the most SEO-friendly Squarespace theme on mobile is Clune by Squarespace, with a Google Lighthouse SEO score of 92 out of 100, followed by Pazari by Squarespace at 92 and Just My Type at 92. 45 Squarespace themes were tested on their own demo stores; the ranking above is live and changes as themes are re-tested.

On desktop, Clune by Squarespace has the highest SEO score in September 2026 at 92 out of 100, then Pazari at 92. 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 Squarespace themes, Clune by Squarespace has the highest mobile SEO score in September 2026 at 92 out of 100; Pazari is next at 92. 45 of the 45 tested Squarespace themes are free; the full list is at /squarespace/free.

In September 2026, the median mobile Lighthouse SEO score across 45 tested Squarespace themes is 92 out of 100, and 33 (73%) reach Google's "good" band of 90 or better. Google's bands are 90–100 good, 50–89 needs improvement and 0–49 poor.

33 Squarespace themes score 90 or better for mobile SEO in September 2026, led by Clune (92), Pazari (92), Just My Type (92), Kitui (92), Hause (92), Troutman (92), Jenani (92) and Cailles (92). Scores are medians across each theme's tested presets.

Clune by Squarespace scores 92 out of 100 for mobile SEO and 92 on desktop in September 2026, measured with Google Lighthouse on its demo store. That places it first of 45 tested Squarespace themes. Its page at /theme/squarespace/clune-fluid-demo shows every page, preset and the audits behind the number.

In September 2026, Clune scores 92 and Pazari scores 92 for mobile SEO; on desktop it is 92 against 92. 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 Squarespace themes, Squarespace has the highest median mobile SEO score in September 2026: 92 across 45 themes. Vendor pages list every theme a vendor has on the rankings.

45 Squarespace 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.

Lighthouse's SEO score checks the technical basics a theme controls — crawlable links, meta tags, mobile viewport, legible fonts, valid structured markup — and most Squarespace 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. Clune leads on SEO in September 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.