You can create an application to upload any file to Drive from the browser. Create the doGet and uploadFiles functions in the Code.gs file as listed here:
In the Code.gs file, add this code:
function doGet() {
// Let's return html page created from the Form.html file.
return HtmlService.createHtmlOutputFromFile('Form.html')
.setTitle("File Upload");
};
function uploadFiles(form) {
// You can change the folder name as you like.
var folderName = "Uploaded Files";
var folder, folders = DriveApp.getFoldersByName(folderName);
// folders is an iterator.
if (folders.hasNext()) folder = folders.next();
// Let's create a folder if it does not exist.
else folder = DriveApp.createFolder(folderName);
// Let's create the file, got from the form, within the folder.
var file = folder.createFile(form.file);
// Let's return the file's url
return file.getUrl();
}The uploadFiles function looks for an existing folder with the name Uploaded...