HiderJS

A simple JavaScript library that can change the title and favicon of the web page it runs on.
You can use HiderJS using a CDN by include the following code in your website's head:
<script src="https://hiderjs.netlify.app/hider.js"></script>
You can also just download the hider.js file and use it how you want to.
Finally, make sure to look at the example HTML file that uses the CDN to make a simple Hider-enabled disguising website.
You can see the example in action here.