Tracking browser built-in Google Translate via Google Tag Manager

Is it possible to find out that users are translating your site using the browser’s built-in translator? Easy.

Add a Custom html tag with the following content:

<script>
    document.addEventListener('DOMSubtreeModified', function(e) {
        if ((e.target.tagName == 'HTML') &&
            (e.target.className.match('translated'))) {
                dataLayer.push({
                    'event': 'UAevent',
                    'eventCategory': 'Behaviour',
                    'eventAction': 'Google Translate',
                    'eventLabel': '{{Page URL}}',
                    'eventValue': null
            });
        }
    }, true);
</script>

And in Universal Analytics, events will appear in the events section Behavior > Google Translate > Page URL.