Opencart Google Tagmanager Extension



Download and Unzip the extension from Opencart

Follow these steps:

Step: 1

Upload the extension using Extension Installer or Unzip and upload the files from Upload Folder. If you are using extension installer please make sure you upload only the file that ends with

Step: 2

Refresh the modification cache using Modification page Refresh cache button.

For Opencart 3x / 4x

Opencart 3, 4 have template cache system we recommend clearing the cache. From the dashboard on your store admin, on the upper right side Clcik on Blue button with cog and refresh the caches.

Nitro, Lightning Cache, Lightspeed, Cloudflare

Clear / purge relevant cache after setup.


Make sure you disable any previously installed extension for Analytics that can conflict, if you have put manaual script tag on the theme pages, in Journal or any other 3rd party extension we recommend disabling or removing it.


Video Installation Guide

Here is the full video guide for Installation 





Setting Google Tag Manager Container

We have provided a JSON Import file along with the download to help to setup your Google Tag Manager. 

Video Guide


Step: 1

Login into your Google Tag Manager Account, select the website you are working on. Go to Admin  


Click on Import Container

Select the file we have provided ending with .JSON

We recommend you select New Work Space and proceed the import.


import the Json files provided in this zip, to import click admin, Go to Import and Import the file, you can create a new workspace or merge with existing. (Do at your own risk)

Step: 2

Publish the Work Space to make it available to use




Google Analytics GA4

Copy the Measurement ID from Google Analytics GA4 Admin 

ga4 measurement id


In the extension admin settings Enable the GA4 tracking and paste the ID


You can also Add API Secret to improve tracking, firstly you need to generate API Secret on Google Analytics admin


Copy the Secret Value


Paste it in the extension and save



Google Ads Conversion Tracking

From the extension admin, go to Google Ads tab and enable Google Ads



Setting up Google Ads formally Adwords is fairly simple, you need to input Conversion Id and Conversion Label.

Both these values could be obtained from Google Ads --> Tools --> Conversion if you are not familiar with this you can see Google Ads Conversion ID and Label section


Google Ads Remarketing

Remarketing is a built in feature in Google Analytics where when using Enhanced Ecommerce you can create Audiences based on several criteria.

Dynamic Re-marketing on the other hand send specific data to Google which can be used in Google Ads and Facebook Pixel to create audiences. 


Google Ads remarketing parameters

You can select custom parameters you want to sent to Google Ads for Audience list.

Remarketing to work properly  you need to have Google Merchant Center / Facebook Catalog feed setup. Our extension do not provide any kind of feed





Page Cache adding exceptions

Page Cache plug-in

Opencart extension Lightning, Nitro, Rocket, Jet Cache all similar extensions generate html pages and serve these instead of processing the PHP again and again. In order to get correct analytics specially where varible data like user email etc. is required to be sent to Analytics or other platform it is important that these are not coming from a Cache page.

You need to make sure that you exclude the follwoing in JS Combine and Miniy exclude section so the Javascript section of the extension is not combine and moved down use the follwoing in JS exclusion 



You also need to exclude the URL for route calling tagmanager/gtm


Full path for the extension for various version of Opencart are as under

Opencart 1.5, 2.0


Opencart 2.1


Opencart 2.3, 3.0


Opencart 4


Simliar exceptions are in all kind of cache plugins 


Server Side Cache

For server side cache like Lightspeed, Cloudflare make sure you are doing the same exception atleast for tagmanager/gtm route which should be bypassed from any kind of cache.


Opencart 1.5x installation

Downlaod the extension files and extract them.

  1. Locate the Opencart 1.5x folder
  2. upload the content of the upload folder to your route of the website
  3. vqmod is required so make sure that you have vqmod already installed
  4. Login to Admin of your store
  5. Add User Permission to User group for newly uploaded files
  6. From the Extension section install the module


For complete installation guide view the video below


Pixel Conversion API Setup

Firstly login to you Pixel Event dashboard and go to settings


Scroll down to Conversion section


If you have already setup the conversion parameters you can just Generate token or take the guided setup to setup Converison API and generate a token.

You then copy and paste the token to Extension settings


Once you have add the api token apply the settings, and move to main settings tab enable Debug API and apply the settings


Open you store and visit a product page, go back to Admin, and refresh the page once to reload the log files

Go to Logs secions if the log shows entries with response code 200 than the API has started working and everything is correct

2023-05-30 16:35:24 - Pixel API Response Code: 200

If the Response code is not 200 something is not right contact support.



Licence can be generated at

Once the licence is generated and installed on a live domain it cannot be changed and you need to buy a new licence for a new domain. 

Subdomain are not counted as new domain, will not require additional licence.

Multistore Licence the same licence key generated for parent domain can be used to enable extension for multi stores.

When generating a licence do not include https:// or http:// or www in the start of the domain or include / at the end of domain:


Subdomain for 2 letter tlds .gr .hk etc. for domain like if you are not able to generate a licence for contact us. 




If case of any issue with licence or activation please contact us 

Google Ads Conversion Id and Label

signin to your Google Ads account, from the Top menu Go to Conversion section

If you haven't created any conversion you can create a new one. 

If you already have a Conversion setup then you can click on that 

Once you are in you can scroll down and go to use Google Tag manager

Here you will find the Conversion ID and Label

You can copy the conversion id and conversion label in to extension settings.

Cookie Consent v3 by is provided in the extension. 

The javascript is located in catalog/view/javascript/tagmanager folder.

The Cookie Consent section of the extension provide full control on how the consent look, text, theme colors etc.

Theme CSS is located in catalog/view/javascript/tagmanager/consent-themes.css which can be modified to fit as per your requirement

The new consent come with Main popup and Preference Popup. You can define the Layout and Position of both use the extension settings as shown in the image below:


Switching on Disable page interaction will disable the page until the user accept or reject the cookie consent.

You can also show a badge to call the cookie setting modal. Also you can add below code in any link, div, button, img tag to call preference window




  • Enable Cookie consent will show a popup that can be customize 
  • Enable enforce mode to block all cookies from saving until the consent is granted, if the enforce mode is off, the banner will be displayed but all consent will be granted by default. Depending on your country you can use this for strict compliance.


Tip: Do not use ' or " in any text field. If you need to use ' or " put a \ before i.e. \' or \" 


Google Consent mode v2 

From version 10.6 Google Consent mode v2 is also implemented, two new configuration are passed to Google



depending on client selection they will be sent denied or granted for Google to allow collection of additional advertising data

gtag('consent', 'default', {
  'ad_storage': 'denied',
  'ad_user_data': 'denied',
  'ad_personalization': 'denied',
  'analytics_storage': 'denied'



When cookie storage is denied for analytics or ads the url_passthrough parameter is set for gtag to pass GCLID or DCLID via URL parameters across pages. (implemented from version 10.6)

gtag('set', 'url_passthrough', true);


Redact ads data

If marketing cookies are denied ads_data_redaction is set to pass 

When ads_data_redaction is true and ad_storage is denied, ad click identifiers sent in network requests by Google Ads and Floodlight tags will be redacted. Network requests will also be sent through a cookieless domain. (implemented from version 10.6)

gtag('set', 'ads_data_redaction', true);