GTM4WP free WordPress plugin

Google Tag Manager (GTM) is Google’s free tool for everyone to manage and deploy analytics and marketing tags as well as other code snippets
using an intuitive web UI. To learn more about this tool, visit the official website.

This plugin places the GTM container code snippets onto your wordpress website so that you do not need to add this manually.
Multiple containers are also supported!

The plugin complements your GTM setup by pushing page meta data and user information into the so called data layer.
Google’s official help pages includes more details about the data layer.

You can also add your Google Optimize container with the recommended code setup

PHP 7.4 is required to use this plugin.

GTM container code placement

The original GTM container code is divided into two parts:

The first part is a javascript code snippet that is added to the section of every page of the website.
This part is critical to enable all features of GTM, and this plugin helps to place this part
correctly on your site.

The second part is an iframe snippet that acts as a failsafe/fallback should users’ JavaScript be disabled.
Google recommends – for best performance – to place this code snippet directly after the opening tag on each page.

Albeit not ideal, it will work when placed lower in the code. This plugin provides a code placement option for the second code snippet.

If your WordPress theme is compatible with the additions of WordPress 5.2 then this plugin will place this second code to the right place.
Users of the Genisis theme, GeneratePress theme, Elementor, Oxygen Builder and Beaver Builder Theme will also have this placed correctly.
To utilize this, use the “Codeless” placement option.

All other users can place this second code snippet using a custom PHP code (“Custom” placement option) or select the so called “Footer” option to
add the code lower in the code (it is not the recommended way but will work)

Basic data included

• post/page titles
• post/page dates
• post/page category names
• post/page tag names
• post/page author ID and name
• post/page ID
• post types
• post count on the current page + in the current category/tag/taxonomy
• custom terms associated with any post type
• logged in status
• logged in user role
• logged in user ID (to track cross device behaviour in Google Analytics)
• logged in user email address (to comply with GTM terms of service do not pass this on to Google tags)
• logger in user creation date
• site search data
• site name and id (for WordPress multisite instances)
• IP address of the visitor (please use the explicit consent of the visitor to utilize this)

Browser / OS / Device data

• browser data (name, version, engine)
• OS data (name, version)
• device data (type, manufacturer, model)

Data is provided using the WhichBrowser library: http://whichbrowser.net/

Weather data

(beta)

Push data about users’ current weather conditions into the dataLayer. This can be used to generate weather-related
audience/remarketing lists on ad platforms and allows for user segmentation in your web analytics solutions:

• weather category (clouds, rain, snow, etc.)
• weather description: more detailed data
• temperature in Celsius or Fahrenheit
• air pressure
• wind speed and degrees

Weather data is queried from Open Weather Map. Depending on your websites traffic, additional fees may apply:
http://openweathermap.org/price

An (free) API key from OpenWeatherMap is required for this feature to work.

ipstack.com is used to determine the site visitor’s location. A (free) API key from IPStack.com is required for this feature to work:
https://ipstack.com/product

Media player events

(experimental)

Track users’ interaction with any embedded media:

• YouTube
• Vimeo
• Soundcloud

DataLayer events can be chosen to fire upon media player load, media is being played, paused/stopped and optionally when
the user reaches 10, 20, 30, …, 90, 100% of the media duration.

Tracking is supported for embedded media using the built-in oEmbed feature of WordPress as well as most other media plugins
and copy/pasted codes. Players injected into the website after page load are not currently supported.

Scroll tracking

Fire tags based on how the visitor scrolls from the top to the bottom of a page.
An example would be to separate “readers” (who spend a specified amount of time on a page) from “scrollers”
(who only scroll through within seconds). You can use these events to fire Analytics tags and/or remarketing/conversion tags
(for micro conversions).

Scroll tracking is based on the solution originally created by

• Nick Mihailovski
• Thomas Baekdal
• Avinash Kaushik
• Joost de Valk
• Eivind Savio
• Justin Cutroni

Original script:
http://cutroni.com/blog/2012/02/21/advanced-content-tracking-with-google-analytics-part-1/

Google Ads remarketing

Google Tag Manager for WordPress can add each dataLayer variable as a Google Ads remarketing custom parameter list.
This enables you to build sophisticated remarketing lists.

Blacklist & Whitelist Tag Manager tags, triggers and variables

To increase website security, you have the option to white- and blacklist tags/triggers/variables.
You can prevent specific tags from firing or the use of certain variable types regardless of your GTM setup.

If the Google account associated with your GTM account is being hacked, an attacker could easily
execute malware on your website without accessing its code on your hosting server. By blacklisting custom HTML tags
and/or custom JavaScript variables you can secure the Tag Manager container.

Integration

Google Tag Manager for WordPress integrates with several popular plugins. More integration to come!

• Contact Form 7: fire an event when a Contact Form 7 form was submitted with any result (mail sent, mail failed, spam detected, invalid input)
• WooCommerce:
  • Classic e-commerce (deprecated):
    • fire an event when visitors add products to their cart
    • capture transaction data to be passed to your ad platforms and/or Analytics
    • capture necessary remarketing parameters for Google Ads Dynamic Remarketing
  • Enhanced e-commerce:
    • implementation of Enhanced E-commerce GA3
    • implementation of Enhanced E-commerce GA4
    • Does not support promotions since WooCommerce does not have such a feature (yet)
    • Does not support refunds
• Google Optimize: load your Google Optimize container directly from your website with the ability to use the data layer variables provided during page load
• AMP: load your AMP container on the AMP version of your pages

Server side containers

If you are using a server side container
you can enter your custom domain name to load gtm.js from your there.