GTM Lite – Free Google Tag Manager & GA4 e-Commerce Module for PrestaShop

PP-M062F
Sales & Marketing
  • 1.7.5 + | 8.x | 9.x
  • PL, EN
  • 1.2.0
  • 2026-08-04
100% FREE (LITE Version) GA4 e-Commerce Standard

GTM Lite is a lightweight, free module connecting your PrestaShop store with Google Tag Manager. It automatically pushes essential e-commerce events to the dataLayer in full compliance with the requirements of Google Analytics 4, Google Ads, and Meta Pixel.

The ideal solution for merchants requiring a reliable, core GA4 sales funnel without database overhead or modifying theme templates.

GTM Lite – Free GTM & GA4 e-Commerce Module | PrestaShop
GTM Lite – Free GTM & GA4 e-Commerce Module | PrestaShop
GTM Lite – Free GTM & GA4 e-Commerce Module | PrestaShop
GTM Lite – Free GTM & GA4 e-Commerce Module | PrestaShop
0.00 € Tax excluded

72 Downloads
  • Free module shared with the PrestaShop community
  • Possibility to report suggestions and bugs - corrections according to availability
  • No warranty or support as standard (no SLA)
  • Download available after logging into the customer account. Download limit 99
  • Need modifications or support? ask about the service

Information Parameters:

  • 1.2.0
  • Store Version PHP Version
    1.7.5 + 7.1 – 7.4
    8.x 8.1 – 8.3
    9.x 8.1 – 8.5
  • 2026-08-04
  • PL, EN
  • ✅
  • ✅
  • ✅
  • ✅

Quick Reference for Developers & Analysts (LITE Event Reference)

Everything you need in one place – the module injects five essential GA4 e-commerce sales funnel events into the dataLayer along with the following payload structure:

Event Name Trigger Moment Passed Payload / Parameters
view_item Viewing a product page currency, value, items (item_id, item_name, price, quantity, optionally item_category)
add_to_cart Adding an item to cart (PrestaShop updateCart event / AJAX) currency, value, items (item_id, item_name, price, quantity, optionally item_category)
remove_from_cart Removing an item or reducing quantity in cart (updateCart: delete / op=down) currency, value, items (item_id, item_name, price, quantity, optionally item_category)
begin_checkout Entering the checkout page with a non-empty cart (once per cart session) currency, value (gross total excl. shipping), optionally coupon, items (list of items in cart)
purchase Order Confirmation page (once per order session) transaction_id, value, tax, shipping, currency, optionally coupon, items

Key Architectural Advantages

  • 100% Free Module (Free LITE Version) – A fully functional, complimentary integration ensuring all primary analytics objectives are met.
  • Data Layer Reset (ecommerce: null) – Automatically clears the dataLayer object prior to triggering each e-commerce event, preventing data pollution or state leakage from previous user actions.
  • Transaction & Checkout Deduplication – The begin_checkout and purchase events incorporate session-based locks to prevent duplicate firing when customers refresh the page.
  • Asynchronous Cart Tracking – The add_to_cart and remove_from_cart events are handled via background AJAX requests. Network errors or tracking script issues will never block cart or checkout operations.
  • Back-Office Privacy Protection – The GTM container script is injected exclusively on Front-Office pages. Your admin panel URL remains completely secure and invisible to tracking tools.
  • Full PrestaShop Multistore Support – Allows distinct GTM Container IDs (GTM-XXXXXXX) to be defined for each shop or shop group within a single installation.

Key Features

1. Back Office (Admin Panel)

One-Click Enable / Disable

Quickly pause GTM script execution without uninstalling the module or losing your configuration settings.

Container ID Validation

Built-in format checking (GTM-XXXXXXX pattern) prevents accidental misconfigurations or typos.

Multistore Contextual Setup

Each store within a Multistore network can transmit data to a separate GTM container or share a global ID.

Automatic Update Checker

The help section provides a quick way to verify the availability of newer module releases directly from the panel.

2. Front Office (Data Layer & Scripts)

Standard GTM Script Injection

Embeds the container script in the <head> element and places the fallback <noscript> snippet immediately after the opening <body> tag.

Purchase Intent Tracking

Captures the fundamental sales journey: view_item → add_to_cart / remove_from_cart → begin_checkout → purchase.

What the Module DOES NOT Do (Clean Code & Zero Bloat)

We value your server resources. GTM Lite is engineered around the KISS (Keep It Simple, Stupid) philosophy:

  • Does not create unnecessary tables inside your PrestaShop database.
  • Does not overhead page loading with complex SQL queries.
  • Does not automatically create tags or triggers inside Google Tag Manager – the module supplies the structured dataLayer; you retain full control over tags and triggers within your GTM workspace.

Quick Implementation Guide

Post-installation Steps:
1. Install the module ZIP file in your PrestaShop Back Office and enter your Container ID (GTM-XXXXXXX).
2. Clear the PrestaShop cache.
3. Verify event firing using GTM Preview Mode or GA4 DebugView.
4. Publish your GTM container with the connected GA4 / Ads tags.

Important Notice!

Please create a complete file and database backup prior to installation. Extract the master package and upload the specific ZIP file matching your PrestaShop line and PHP version. Following configuration, publish your GTM container, clear the PrestaShop cache, and verify all five events using GTM Preview or GA4 DebugView. The module populates data into the dataLayer but does not automatically generate tags, triggers, or tag configurations inside your Google Tag Manager container.

## [1.2.0] - 2026-08-04

- Cosmetic fix: clarified English labels and help text in the module configuration.

## [1.0.0] - 2026-08-03

### Added

- Initial release of the module.
- GA4 ecommerce events: `view_item`, `add_to_cart`, `remove_from_cart`, `begin_checkout`, `purchase`.

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FAQs

  • Which GA4 e-commerce events does GTM Lite send?

    The module sends five core e-commerce funnel events to the dataLayer: view_item, add_to_cart, remove_from_cart, begin_checkout and purchase. Each event includes relevant data such as value, currency and the product list.

  • Are the modules compatible with my version of PrestaShop?

    Each module in our store contains information about compatibility with specific PrestaShop versions. Please check this information carefully before purchasing. If you are not sure, contact us.

  • How does the module prevent event data from being mixed?

    Before each event, the module clears the ecommerce object by passing a null value. This prevents data remaining from previous user actions from being overwritten or carried over in the dataLayer.

  • Are checkout and purchase events deduplicated?

    The begin_checkout and purchase events are protected at session level against repeated emission. This includes cases where a customer refreshes the checkout or order-confirmation page during the same session.

  • Does the GTM code also run in the Back Office?

    Google Tag Manager code is loaded only on Front Office pages. The administration area is excluded from analytics, keeping administrative activity separate from data collected during customer visits.

  • Does the module create Google Tag Manager tags automatically?

    The module provides the dataLayer and e-commerce events, but it does not automatically create tags, triggers or service configuration in the Google Tag Manager container. Configuration of these elements remains with the container administrator.

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Do you need additional features or custom solutions?

  • Module customisation tailored to your specific requirements.
  • Extending functionality to enhance your store's capabilities.
  • Developing bespoke modules designed to meet your unique needs.
  • Integrating external systems and additional tools.
  • Optimisation and improvements for better performance and user experience.

Do you have ideas on how to improve this software? Share your suggestions for optimisation, new features, or bug reports – we’ll be happy to review them!

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