Google Tag Manager Tutorial - 2025
Google Tag Manager is a Free Tool released by Google on 1 October 2012. GTM Lets marketer’s to install and manage different marketing tags ( Code ) on websites and Mobile apps without altering the main website code or rewriting the site code. GTM gives marketers more flexibility and lets webmasters and SEO Experts focus on other important tasks. This tool works with both Google and Non- Google Website tags
How Does Google Tag Manager Work
Google Tag Manager (GTM) simplifies tracking user behavior and events on your website by using a single JavaScript code snippet that serves as a container for all your tags. When you add this snippet to your site, GTM listens for user interactions, such as page views and clicks. These interactions are then checked against predefined triggers set up in GTM. If an interaction matches a trigger, the corresponding tag is fired, injecting the necessary code into the website. This code can be for Google Analytics, other marketing platforms, or specific events you want to track. The tag then processes the relevant data and sends it to the designated third-party service. GTM eliminates the need for multiple code snippets on your site, making tag management more efficient. It can also be used with mobile apps through Firebase SDK, Android, or iOS, allowing you to manage tags across different platforms effortlessly. This tool is especially useful for managing multiple websites, as it allows for centralized control and automatic updates without manual coding. For a detailed explanation, Click the link below for a comprehensive guide on how to use GTM for optimal website performance and data tracking.
How to Manage users and permissions in GTM
There are multiple roles in search console and each roles has its own merits and demerits. It is always important that you control who has access to the data and if the access you shared to wrong hands the impact it may cause will be bigger. So lets learn about different types of permission in GSC
Owner
There are two types of owners: either the user has verified their ownership via one of the verification mentioned above or has had ownership delegated to them by an owner.
Restricted
A restricted user can only view the data in the property. They cannot make any change in the property nor delete the property.
Full
This type of user has access to almost all the functions of the property Owner and can view all type of data in the property and are able to take certain actions
Enhanced Data Accuracy and Consistency
Improved Website Performance
Faster Deployment of Tags
Simplified Tag Management and Workspace
Benefits of Using Google Tag Manager
Google Tag Manager (GTM) simplifies the process of adding and managing tracking codes on a website without requiring direct code changes. It allows marketers and developers to control various tags—such as Google Analytics, Facebook Pixel, and conversion tracking—through a single platform. This reduces dependency on developers, speeds up the implementation of marketing and analytics tools, and ensures that updates can be made quickly without affecting the site’s functionality.
Another major benefit of GTM is its ability to improve website performance and data accuracy. Since tags load asynchronously, they don’t slow down the site, resulting in a better user experience. GTM also offers built-in debugging and preview features, allowing users to test their tags before publishing them live. This helps in avoiding tracking errors and ensures that all implemented tags work correctly, providing reliable data for marketing and business decisions.
Best Practices for Google Tag Manager
- Use Clear Naming Conventions: Adopt consistent and descriptive names for tags, triggers, and variables to maintain clarity and organization.
- Test Thoroughly: Always use GTM's Preview and Debug mode to test your tags before publishing, ensuring they function as intended.
- Maintain Documentation: Keep detailed records of all tags, triggers, and variables to facilitate collaboration and future updates.
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Frequently Asked Questions
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Google Tag Manager (GTM) is a free tool that helps manage and deploy marketing tags (small pieces of code) on a website or mobile app without modifying the code directly. It simplifies tracking user interactions, setting up analytics, and integrating third-party services like Google Analytics, Meta Pixel, and Google Ads.
TM works by embedding a small snippet of code (container code) on your website or app. This container acts as a central hub where you can add, update, and control various tracking tags (e.g., Google Analytics, Facebook Pixel) without editing your website’s source code.
Tags collect and send data.
Triggers define when and where tags fire.
Variables store reusable values like tracking IDs.
You can practice GTM using:
- Google Tag Manager Demo & Test Account (Google’s Sandbox).
- Setting Up GTM on Your Own Website or a test site.
- Google Tag Assistant Chrome Extension to check GTM setup.
- Google Analytics Debugger for testing tags.
- Tag Assistant Companion for previewing tag behavior.
- Open GTM and go to Variables in the left menu.
- Click New under “User-Defined Variables.”
Choose the variable type (e.g., Constant, Page URL, Data Layer Variable). - Configure the variable settings.
- Save and use it in tags and triggers.
- Create a Tag in GTM.
- Select the tag type (e.g., Google Analytics, Facebook Pixel).
- Configure the tag settings (e.g., enter the GA tracking ID).
- Assign a Trigger (e.g., Page View, Click, Form Submission).
- Save, preview, and publish changes in GTM.
A trigger determines when a tag should fire. It listens for specific user interactions like:
- Page View (fires when a page loads).
- Click Trigger (fires when a button/link is clicked).
- Form Submission (fires when a form is submitted).
- Custom Event (fires when specific JavaScript events occur).
- Create a New Tag and select “Google Analytics: GA4 Event.”
- Enter the GA4 Measurement ID.
- Define the Event Name (e.g., “form_submission” or “button_click”).
- Add relevant Event Parameters (e.g., button text).
- Assign a Trigger (e.g., Click, Form Submission).
- Save, preview, and publish the changes.
GTM codes refer to the Google Tag Manager container snippet that needs to be placed on a website. It consists of:
Head Code: <script> tag that loads the GTM script.
Body Code: <noscript> fallback for browsers with JavaScript disable
- Tags – Snippets of code that collect data (e.g., Google Analytics, Meta Pixel).
- Triggers – Define when and where a tag fires (e.g., Page View, Click Event).
- Variables – Store reusable values like tracking IDs, page URLs, or custom data.