How much Google tag (gtag.js) slows a Shopify store
We measured Google tag (gtag.js) on 559 Shopify ecommerce stores. This is the processing time it added on the typical store's homepage.
Heavy (300 ms to 1 second)
Google tag (gtag.js) was heavy on 75% of the stores it was measured on.
Last measured on October 28, 2026.
All apps in the index · How we measure these numbers
ShopWeight isn't affiliated with Shopify or with any app maker listed here.
How it varied from store to store
The same app can take more work on one store than on another. It depends on how the app is set up and what else loads with it.
| Light (under 100 ms) | 31 of 559 stores |
| Moderate (100 to 300 ms) | 50 of 559 stores |
| Heavy (300 ms to 1 second) | 420 of 559 stores |
| Very heavy (over 1 second) | 58 of 559 stores |
Compare Google tag (gtag.js) with other analytics apps
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