I'm wondering how to change the default favicon on the browser tab using a nano react app and displaying it on localhost. I've already tried the whole process using https://realfavicongenerator.net/ but I don't have the static nor the public folder since it's a nano project... I'm not sure it's possible either
You have generated the favicon, but have not linked it to the html page. Here is the structure of the project as per the documentation on their github repo.
Here the index.html file is in the project root folder. To get it working, you can place your favicon alongside it, and in index.html you can add <link rel="icon" href="./favicon-filename" />
Since the project uses Parcel, it will find the favicon during the build process.