Creating a Chrome extension

Once you have your application set up, add a ‘manifest.json’ file with the following content:

{
    "name": "Test extension",
    "version": "1.0",
    "description": "This extension allows you to XYZ",
    "manifest_version": 3, 
    "author": "Tracy Chen",
    "action": {
        "default_popup": "index.html",
        "default_title": "Test extension"
    }
}

Now navigate to Chrome and select Extensions > Manage Extensions > Toggle Developer Mode > and click Load Unpacked.