Google Tag Manager on GetSimple CMS | OpsBlu Docs

Google Tag Manager on GetSimple CMS

How to install and configure Google Tag Manager on GetSimple CMS. Covers installation method, container setup, verification, and GetSimple CMS-specific...

For general GTM concepts, see Google Tag Manager Overview

Overview

GetSimple CMS is a flat-file CMS with PHP theme templates. Add GTM by editing your theme's template file.

Prerequisites

Installation

Where to Add GTM Code

Edit theme/your-theme/template.php — add head snippet before </head> and body snippet after <body> tag

Plugin / Extension

The Custom Header/Footer plugin for GetSimple adds code injection fields without editing theme files. Install from the GetSimple plugin repository.

GTM Head Snippet

Add this in the <head> section:

<!-- 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 Body Snippet

Add this immediately after the opening <body> tag:

<!-- 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) -->

Replace GTM-XXXXXXX with your actual Container ID in both snippets.

GetSimple CMS-Specific Considerations

GetSimple is a minimal CMS with no database. Template edits are the primary way to add scripts. Theme updates will overwrite changes — back up your template.php before updating.

Template System

GetSimple CMS uses PHP templates in theme/your-theme/. When editing templates directly, note that the GTM JavaScript snippet (inside <script> tags) will not conflict with the template engine's syntax.

Verification

After installation, verify GTM is working:

  1. GTM Preview Mode — In GTM, click Preview, enter your site URL, and verify the container loads.
  2. Browser Console — Open DevTools (F12) and run console.log(window.google_tag_manager). You should see an object (not undefined).
  3. Network Tab — Filter for googletagmanager.com and verify gtm.js loads with a 200 response.
  4. Data Layer Check — Run console.log(window.dataLayer) to verify the data layer array exists.

Next Steps

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