'Flutter Web send pdf file to a WhatsApp contact using URL Launcher

I have implemented a void function to launch WhatsApp in Flutter Web using URL Launcher. However my goal is to pass a pdf file to a WhatsApp contact and not the text HelloWorld. Does anyone know how I go about it and should I convert the pdf file to Uri and then parse as a string?

 void _openWhatsApp(String phoneNumberControllerText) async {
    String phoneNumber = phoneNumberControllerText;
    var url = 'https://wa.me/${phoneNumber}?text=HelloWorld';
    await launch(url);
  }

Solution 1:^[1]

What you want is to share the PDF, check out this package share_plus

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Solution 1	S. Souza

'Flutter Web send pdf file to a WhatsApp contact using URL Launcher

Solution 1:[1]

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Solution 1:^[1]