State of BigCommerce theme SEO — September 2026
As of 2026-09-15, 239 BigCommerce themes have Google Lighthouse SEO scores on Themestested, measured on their own demo stores. The median mobile SEO score is 85 (desktop 85); 56 themes (23%) score 90 or better on mobile. The highest is Tribes Automotive by Halothemes at 97, then Nimo Decor at 97 and Spark Automotive at 97. Among the themes first tested in September 2026, the best for mobile SEO is Tribes Automotive at 97.
Top BigCommerce themes for SEO
Highest mobile SEO score as of 2026-09-15; the desktop score beside it. A theme's score is the median of its tested presets.
| Theme | Mobile | Desktop | Price | |
|---|---|---|---|---|
| 1 | Tribes Automotive · Halothemes | 97 | 97 | $300 |
| 2 | Nimo Decor · Halothemes | 97 | 97 | $250 |
| 3 | Spark Automotive · Halothemes | 97 | 97 | $350 |
| 4 | Hera Bright · Halothemes | 95 | 95 | $300 |
| 5 | Annie's Garden Tech · Halothemes | 95 | 95 | $245 |
| 6 | Spark Tools · Halothemes | 95 | 95 | $350 |
| 7 | Tribes Jewelry · Halothemes | 95 | 95 | $300 |
| 8 | Nimo Jewelry · Halothemes | 95 | 95 | $250 |
| 9 | Covent Garden Bright · Flair Consultancy | 92 | 92 | $235 |
| 10 | Covent Garden Contemporary · Flair Consultancy | 92 | 92 | $235 |
New this month
Themes first tested in September 2026, best first.
| Theme | Mobile | Desktop | Price | |
|---|---|---|---|---|
| 1 | Tribes Automotive · Halothemes | 97 | 97 | $300 |
| 2 | Nimo Decor · Halothemes | 97 | 97 | $250 |
| 3 | Spark Automotive · Halothemes | 97 | 97 | $350 |
| 4 | Hera Bright · Halothemes | 95 | 95 | $300 |
| 5 | Annie's Garden Tech · Halothemes | 95 | 95 | $245 |
| 6 | Spark Tools · Halothemes | 95 | 95 | $350 |
| 7 | Tribes Jewelry · Halothemes | 95 | 95 | $300 |
| 8 | Nimo Jewelry · Halothemes | 95 | 95 | $250 |
| 9 | Covent Garden Bright · Flair Consultancy | 92 | 92 | $235 |
| 10 | Covent Garden Contemporary · Flair Consultancy | 92 | 92 | $235 |
Trending
The biggest changes in mobile SEO between a theme's latest test and its last test at least a week earlier. A move of 3 points or more counts; Lighthouse varies by a point or two between runs.
Not enough re-tests yet: trending needs a theme measured at least a week apart, and the score history began on 2026-09-11. This section fills in as themes are re-measured.
Distribution
How all 239 tested BigCommerce themes fall across Google's bands.
About this report
Scores are Google Lighthouse SEO scores from the PageSpeed Insights API, run against each theme's own demo store — the home page and, on store platforms, a collection and a product page — on a simulated mid-range phone and on desktop. A theme's score is the median of its presets; a preset's is the mean of its pages. Every run is kept, and a theme's page shows its history. This month's report updates daily until the month ends. Read the full methodology, or see the live BigCommerce SEO ranking.
Other months: none yet
Other reports for September 2026: speedaccessibility