Google Tag Manager

Category: Tag Management

• Stores observed: 501,715 Shopify store home pages (HTTP Archive, mobile, 2026-09-01 crawl)
• Median script size loaded: 528 KB (p75: 837 KB)
• Median script requests: 3
• Lab median main-thread time: 3,355 ms, blocking 0 ms (Lighthouse, small sample of 67 stores)

Attribution is based on script URLs; see methodology. Are you the developer? Request a correction.