Google Tag Manager vs Heap

Google Tag Manager is used by more websites in our catalog: 262,222 use Google Tag Manager and 476 use Heap.

Heap sites have the higher median Ahrefs Domain Rating (Google Tag Manager: 36, Heap: 45).

Between 2026-06 and 2026-07, Google Tag Manager went from 36% to 30% of all tracked sites, while Heap went from 0.07% to 0.05%. Heap is gaining ground faster in our index.

298 websites in our catalog use both Google Tag Manager and Heap.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.