WordPress themes ranked by mobile SEO

As of September 2026 (measured 2026-09-15), the most SEO-friendly WordPress theme on mobile is PeakShops by fuelthemes, with a Google Lighthouse SEO score of 100 out of 100, followed by Ferrano by GloriaThemes at 100 and Wolmart at 100. 5,290 WordPress themes were tested on their own demo stores; the ranking above is live and changes as themes are re-tested.

On desktop, PeakShops by fuelthemes has the highest SEO score in September 2026 at 100 out of 100, then Ferrano 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 WordPress themes, ARzine by webriti has the highest mobile SEO score in September 2026 at 91 out of 100; Shop Asthir is next at 90. 5,109 of the 5,290 tested WordPress themes are free; the full list is at /wordpress/free.

The most popular WordPress theme by marketplace usage is Astra by Brainstorm Force, and in September 2026 it scores 58 out of 100 for mobile SEO, against 100 for the most SEO-friendly theme, PeakShops. Twenty Seventeen (58) and Hello Elementor (50) are the next most popular. Popularity is a signal of trust, not of SEO.

In September 2026, the median mobile Lighthouse SEO score across 5,290 tested WordPress themes is 45 out of 100, and 89 (2%) reach Google's "good" band of 90 or better. Google's bands are 90–100 good, 50–89 needs improvement and 0–49 poor.

89 WordPress themes score 90 or better for mobile SEO in September 2026, led by PeakShops (100), Ferrano (100), Wolmart (100), Pricom (100), GlideX (100), Nika (100), Woworld (100) and Zota (100). Scores are medians across each theme's tested presets.

Astra by Brainstorm Force scores 58 out of 100 for mobile SEO and 58 on desktop in September 2026, measured with Google Lighthouse on its demo store. That places it at number 179 of 5,290 tested WordPress themes. Its page at /theme/wordpress/astra shows every page, preset and the audits behind the number.

PeakShops by fuelthemes scores 100 out of 100 for mobile SEO and 100 on desktop in September 2026, measured with Google Lighthouse on its demo store. That places it first of 5,290 tested WordPress themes. Its page at /theme/wordpress/tf-peakshops-modern-multiconcept-woocommerce-theme-26312835 shows every page, preset and the audits behind the number.

In September 2026, PeakShops scores 100 and Ferrano 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 WordPress themes, thembay has the highest median mobile SEO score in September 2026: 100 across 7 themes. Vendor pages list every theme a vendor has on the rankings.

5,290 WordPress 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 WordPress 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. PeakShops 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.