We have recently developed a site into the gatsby. We want to add Google Analytics to the website.

So, this is the way we implemented Google Analytics in the Gatsby site.

Use Gatsby Google GTag Plugin

Gatsby has a plugin gatsby-plugin-google-gtag that be used to easily add Google Global Site Tag to your Gatsby site.

Install the package by running the following command:

npm i gatsby-plugin-google-gtag --save

Configuration

Once the installation is complete, you can now add this plugin to your gatsby-config.js:

Configure trackingIds and other options. Add this into the plugins array. Like,

module.exports = {
  // ...
  plugins: [
    {
      resolve: `gatsby-plugin-google-gtag`,
      options: {
              // You can add multiple tracking ids and a pageview event will be fired for all of them.
              trackingIds: [
                "GA-TRACKING_ID", // Google Analytics / GA
                "AW-CONVERSION_ID", // Google Ads / Adwords / AW
                "DC-FLOODIGHT_ID", // Marketing Platform advertising products (Display & Video 360, Search Ads 360, and Campaign Manager)
              ],
              // This object gets passed directly to the gtag config command
              // This config will be shared across all trackingIds
              gtagConfig: {
                optimize_id: "OPT_CONTAINER_ID",
                anonymize_ip: true,
                cookie_expires: 0,
              },
              // This object is used for configuration specific to this plugin
              pluginConfig: {
                // Puts tracking script in the head instead of the body
                head: false,
                // Setting this parameter is also optional
                respectDNT: true,
                // Avoids sending pageview hits from custom paths
                exclude: ["/preview/**", "/do-not-track/me/too/"],
              },
      },
    },
  ],
}

This plugin automatically sends a “pageview” event to all products given as “trackingIds'' on every Gatsby's route change.

If you want to call a custom event you have access to window.gtag where you can call an event for all products.

Check out this code.

typeof window !== "undefined" && window.gtag("event", "click", { ...data })

NOTE: This plugin only works in production mode! To test your Global Site Tag is installed and

You need to run the following command for firing events correctly.

gatsby build && gatsby serve

If you need to exclude any path from the tracking system, you can add one or more to this optional array.