GTM Lite – Free Google Tag Manager & GA4 e-Commerce Module for PrestaShop
- 1.7.5 + | 8.x | 9.x
- PL, EN
- 1.2.0
- 2026-08-04
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.
- New
Information Parameters:
- 1.2.0
-
Store Version PHP Version1.7.5 + 7.1 – 7.48.x 8.1 – 8.39.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 thedataLayerobject prior to triggering each e-commerce event, preventing data pollution or state leakage from previous user actions. - Transaction & Checkout Deduplication – The
begin_checkoutandpurchaseevents incorporate session-based locks to prevent duplicate firing when customers refresh the page. - Asynchronous Cart Tracking – The
add_to_cartandremove_from_cartevents 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
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We accept payments by credit/debit card, bank transfer and online payment systems such as Przelewy24, PayPal. Details can be found on the payment page.
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Extension of support and updates:
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We design our modules with GDPR compliance in mind. If a module processes personal data, you will find detailed information on compliance with the regulations in its description. We make every effort to ensure that our solutions meet current data protection standards.
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Can I ask you to adapt the module to my needs?
Yes, we offer a module personalization service. Describe your needs and we will prepare an individual quote.
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Can I ask for advice in choosing a module?
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Do you offer help with store optimization after installing the modules?
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Can I get a discount as a regular customer?
Yes, for our regular customers we offer a loyalty program with attractive discounts. Check the details in your customer panel. If you do not see such an option, contact us - we will be happy to help!
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What does the module update process look like?
If the module requires an update, you can download the latest version from your client panel. We recommend backing up your store before updating.
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Purchased modules are licensed for a single store. The exception is the use of the multi-shop feature within a single PrestaShop installation. In this case, you can use the module on multiple stores, even with different domains, provided that:
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Most of our modules are available in several languages, including Polish and English. Information about available languages can be found in the module description.
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Yes, we do custom module creation. Contact us for details and pricing.
Do you need additional features or custom solutions?
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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!