Added this js to theme.liquid for all external links to open in a new tab, applied site-wide:
<script>
document.addEventListener(‘DOMContentLoaded’, function() const links = document.querySelectorAll(‘a[href^=”http”]’);
links.forEach(link => if (!link.href.includes(window.location.hostname)) link.setAttribute(‘target’, ‘_blank’);
link.setAttribute(‘rel’, ‘noopener noreferrer’);
}
});
});
</script>