# Google AnalyticsGoogle Analytics is an analytics service that enables you to measure traffic and engagement across your websites and apps.
[Google Analytics](https://marketingplatform.google.com/about/analytics/) is an analytics service that enables you to measure traffic and engagement across your websites and apps.

{{< callout context="note" title="Using Google Analytics GA4 with CSP" icon="info-circle" >}}

Don't forget to update your `Content-Security-Policy` HTTP response header when using Google Analytics. [See an example](https://content-security-policy.com/examples/google-analytics/)

{{< /callout >}}

## Prerequisites

To follow this guide, you'll need an existing [Thulite](https://thulite.io/) site and a [Google Analytics 4](https://support.google.com/analytics/answer/10089681) property.

## Add script

Add to `layouts/partials/head/script-header.html`:

```html
{{ template "_internal/google_analytics.html" . }}
```

## Add tracking ID

Add your tracking ID to `config/_default/hugo.toml`:

```toml
[services]
  [services.googleAnalytics]
    ID = 'G-MEASUREMENT_ID'
```

## Resources

- [Set up Analytics for a website and/or app](https://support.google.com/analytics/answer/9304153?sjid=14124496534625981645-EU)
- [The Google tag and Tag Manager](https://developers.google.com/analytics/devguides/collection/ga4/tag-options)
- [Introduction to Google Analytics 4](https://developers.google.com/analytics/devguides/collection/ga4)