Download Pdf From Google.script.run In Web App

What I'm trying to achieve is to download sheet as .PDF file from google script web app, but I have a problem: output file has (probably) wrong encoding (UTF-8 also doesn't work).

Solution 1:

When the blob of var blob = response.getBlob() is created as a PDF file using DriveApp.createFile(blob), if you can see the PDF completely, how about this modification?

From :

var blob = response.getBlob();
var charset = 'ISO-8859-1';
var str = blob.getDataAsString(charset);
return Utilities.base64Encode(str);

To :

var blob = response.getBlob();
return Utilities.base64Encode(blob.getBytes());

Reference :

• Utilities.base64Encode()

If this was not the direct solution for your issue, I'm sorry.