Sending events to Google Analytics 4 or Tag Manager

1. Make sure Google Analytics 4 (gtag.js) or Google Tag Manager is already on your site. The plugin does not add them.
2. Go to Settings → Language Switcher → Advanced → Analytics.
3. Switch on Send an event to Google Analytics.
4. Optional: change the Event name (default language_switch). Use lowercase letters, numbers, _ and - only.
5. Save.

When a visitor picks another language, the plugin sends:

Where	What is sent
gtag.js (GA4)	gtag('event', 'language_switch', { from_language: 'en', to_language: 'fr' }), sent with a beacon so it is not lost when the page changes
Google Tag Manager	dataLayer.push({ event: 'language_switch', from_language: 'en', to_language: 'fr' })

If both are on the page, both are sent. If neither is, nothing happens.

In GA4: the event appears in Reports → Engagement → Events. To see from_language and to_language in reports, register them as custom dimensions (event scope) in Admin → Custom definitions.

In Google Tag Manager: create a Custom Event trigger for language_switch and Data Layer Variables for from_language and to_language, then use them in a GA4 Event tag.