Here is a useful article on how to turn off Web Notifications in Chrome from TechRadar:
Your web browser likely now allows websites to send you notifications in a similar way to the apps you use, and sometimes you might decide that you just don’t want them.
It can be useful for news stories and updates from websites you know and love. It’s something we even do on TechRadar for our fans, but you may not want notifications from us and we understand that.
That’s why we’ve put together this guide on how you can disable notifications for Google Chrome, Firefox, Microsoft Edge and Safari.
Whenever you visit a website that wants to send you notifications, you’ll be greeted with a pop up that asks whether you want to agree to them or not. Your options will be ‘allow’ or ‘block’.
If you’re getting notifications from TechRadar or another site, you will have previously pressed the allow button. It may be you’ve visited sites in the past and pressed allow without really realizing, or you’ve intentionally decided you wanted them but now you’ve decided they’re not for you. If that’s the case, below we’ll teach you how to turn them off.