GTM Container Snippet for HubSpot

hubspot-gtm-loader.html

<!-- Google Tag Manager loader; customized by Analytics Pros [analyticspros.com] -->
<script>
 
 /* Update these for your GTM container(s); be sure they're unique, occurring only once each, not duplicated */
var GTMContainerIDs = ['GTM-XXXXX', 'GTM-YYYYY' ];

window.dataLayer = window.dataLayer || [];
window.dataLayer.push({ 
  'platform': 'hubspot' // Update this value to reflect other platforms
});

(function(w,d,s,l,i,j,f,dl,k,q){
  w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});
  f=d.getElementsByTagName(s)[0], k=i.length;q='//www.googletagmanager.com/gtm.js?id=@&l='+(l||'dataLayer');
  while(k--){j=d.createElement(s);j.async=!0;j.src=q.replace('@',i[k]);f.parentNode.insertBefore(j,f);}
}(window,document,'script','dataLayer',GTMContainerIDs));
</script>