How to Setup Google Analytics 4 using Google Tag Manager in Tamil?

Setting up Google Analytics 4 (GA4) using Google Tag Manager is the cleanest and most recommended method.
It allows you to manage analytics tracking without touching website code repeatedly and gives better control for future tracking needs.

Why Use Google Tag Manager for GA4?

Using GTM for GA4 helps you:

  • Avoid editing website code again and again
  • Manage GA4, Google Ads & other tags in one place
  • Add events and conversions easily
  • Reduce technical errors
  • Scale tracking as your business grows

Google itself recommends GTM for GA4 setup.

What You Need Before Setup

Make sure you have:

  • A live website
  • A Google Analytics (GA4) property
  • A Google Tag Manager account installed on your site
  • Admin access to GA4 & GTM

Step 1: Create a GA4 Property

  1. Go to https://analytics.google.com
  2. Click Start measuring
  3. Create an Account (if not already created)
  4. Create a GA4 Property
  5. Choose Web data stream
  6. Enter website URL and stream name

Copy the Measurement ID (G-XXXXXXXX) — you’ll need this.

Step 2: Log In to Google Tag Manager

  1. Go to https://tagmanager.google.com
  2. Select your Container
  3. Click Tags → New

Step 3: Create GA4 Configuration Tag (Main Tag)

  1. Click Tag Configuration
  2. Select Google Analytics → GA4 Configuration
  3. Paste your GA4 Measurement ID
  4. Enable Send a page view event when this configuration loads
  5. Click Triggering
  6. Choose All Pages

This tag tracks page views automatically.

Step 4: Save the Tag

  • Name the tag clearly
    Example: GA4 – Configuration – All Pages
  • Click Save

Step 5: Preview & Test GA4 Setup 

  1. Click Preview in GTM
  2. Enter your website URL
  3. Visit your site in a new tab
  4. Go to GA4 → Reports → Realtime

If you see active users, GA4 is working correctly.

Step 6: Publish the Container

After successful testing:

  1. Click Submit
  2. Add version name & description
  3. Click Publish

GA4 tracking is now live using GTM.

What Data GA4 Starts Tracking Automatically

With Enhanced Measurement ON, GA4 tracks:

  • Page views
  • Scrolls
  • Outbound clicks
  • File downloads
  • Video engagement
  • Site search

No extra setup needed initially.

Real-Life Example

Example: Service Business Website

After GA4 + GTM setup:

  • Owner sees traffic from Google Search
  • Identifies top pages
  • Tracks form submissions later as conversions
  • Improves landing pages based on data

Result: Better decisions and more leads

Common Mistakes to Avoid ❌

  • Installing GA4 directly + via GTM (duplicate tracking)
  • Forgetting to publish GTM container
  • Using wrong Measurement ID
  • Skipping testing before publish
  • Not enabling enhanced measurement

What to Do After GA4 Setup

  • Set up conversion events
  • Link GA4 with Google Search Console
  • Connect GA4 with Google Ads
  • Track form submits, clicks, and sales
  • Review reports weekly
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