Standard GTM Script (in <head>)
<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-XXXXXXX');</script>
<!-- End Google Tag Manager -->
GTM Noscript Tag (after <body>)
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-XXXXXXX"
height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- End Google Tag Manager (noscript) -->
Container ID Format
GTM-XXXXXXX — 7-char standard format
GTM-XXXXXX — 6-char alternative format
Benefits of Google Tag Manager
- Manage tags without touching website code
- Centralized tag management interface
- Version control and rollback capabilities
- Async tag loading for faster pages
- Built-in templates for popular tags
- Advanced debugging and preview mode