How to get Blade template view as a raw HTML string?

You can call render() on the view.

$html = view('users.edit', compact('user'))->render();

See the View source code for more information.

This is the perfect solution of download/converting a blade file to HTML.

$view = view('welcome')->render();
header("Content-type: text/html");
header("Content-Disposition: attachment; filename=view.html");
return $view;