JustAd Pixel — Google Tag Manager Template

A Google Tag Manager custom tag template that installs the JustAd Pixel. It initializes the global justad() command queue and asynchronously loads the JustAd SDK using your Advertiser ID.

What it does

This template is the sandboxed-JavaScript equivalent of the standard JustAd snippet:

<!-- JustAd Pixel -->
<script>
  window.justad = window.justad || function () {
    (window.justad.q = window.justad.q || []).push(arguments);
  };
</script>
<script async src="https://sdk.just.ad/a.js?a={{Advertiser_id}}"></script>
<!-- End JustAd Pixel -->

Because GTM custom templates run in Sandboxed JavaScript (raw <script> injection is not allowed), the snippet is implemented with:

• createArgumentsQueue('justad', 'justad.q') — creates the global window.justad stub function that pushes its arguments onto the window.justad.q queue.
• injectScript('https://sdk.just.ad/a.js?a=<Advertiser ID>') — loads the SDK asynchronously.

Configuration

Field	Required	Description
Advertiser ID	Yes	Your JustAd Advertiser ID. Passed to the SDK as the a query parameter. Can be set with a GTM variable, e.g. {{Advertiser ID}}.

Installation

1. In Google Tag Manager, go to Templates → New (Tag Templates).
2. Open the overflow menu and choose Import, then select template.tpl.
3. Save the template.
4. Create a new tag using the JustAd Pixel template, set the Advertiser ID, and add a trigger (typically All Pages / Initialization).

Permissions

• Accesses global variables: justad, justad.q (read, write, execute).
• Injects scripts: https://sdk.just.ad/*.

Repository structure

.
├── template.tpl      # The GTM custom template (import this into GTM)
├── metadata.yaml     # Community Template Gallery metadata
├── LICENSE           # Apache 2.0
└── README.md

Publishing to the Community Template Gallery

This repo follows the Community Template Gallery structure. Before submitting:

1. Confirm the "Agree to the Community Template Gallery Terms of Service" box is checked in the template's Info tab.
2. Update metadata.yaml:
   • Set homepage and documentation to real URLs.
   • Replace REPLACE_WITH_COMMIT_SHA with the commit SHA of the release.
3. Push to a public GitHub repo with template.tpl, metadata.yaml, and LICENSE at the repository root on the main branch, with Issues enabled.
4. Submit the repository URL at tagmanager.google.com/gallery.

License

Apache License 2.0. See LICENSE.