Clean Title is a browser extension that clears the tab title from those annoying notification counters.
You can install the extension from either the Chrome Web Store
or
by downloading the zip of the repo, enabling 'Developer mode' in the top left of your Menage extensions page (chrome://extensions/), clicking 'Load unpacked' and selecting the corresponding zip file.
- YouTube
- Gmail
- Twitch
Thanks to @buurro for suggestions and insights.