Add this script to the head of the website to make the title tab blink.

<https://medium.com/@alperen.talaslioglu/changing-page-title-dynamically-when-user-changes-tab-5d372554377c>

<script>
window.onload = function() {
var pageTitle = document.title;
var attentionMessage = '♥ ' + pageTitle;
var blinkEvent = null;
document.addEventListener('visibilitychange', function(e) {
var isPageActive = !document.hidden;
if(!isPageActive){
blink();
}else {
document.title = pageTitle;
clearInterval(blinkEvent);
}
});
function blink(){
blinkEvent = setInterval(function() {
if(document.title === attentionMessage){
document.title = pageTitle;
}else {
document.title = attentionMessage;
}
}, 5000);
}
};
</script>
Code language: HTML, XML (xml)