How can you set title and icon for a flutter web app?

Assuming you already have a favicon.ico file, placing it inside the your_project_dir\web folder alongside index.html as shown below is enough for the browser to pick it up.

Following is the result of placing a favicon.ico' in theweb` folder. Make sure to do a clean build.

In other case you can manually mention it using the link tag inside your index.html as explained here in this Wikipedia page.

In order to change the title to what you desire, you need to add the parameter title (Which is a String) to your MaterialApp widget.

return MaterialApp(
  title: "MyTitle", 
  home: MyHomeWidget());