Merge Multiple PDF's into one PDF

Question

I am having some issues with my code. I am trying to loop through a Drive folder that contains many PDFs and then merge these into one file. When I use my code it just creat

Answer 1

I'm also having the same problem, and I'm temporarily using a RestFul API to merge the PDFs: https://www.convertapi.com/pdf-to-merge

function merge() {
  var folder = DriveApp.getFolderById(''); // folder with files pdf
  var files = folder.getFiles(); // get all files pdf
  
  var formData = {};
  var index = 0;
  while(files.hasNext()) {
    var file = files.next();
    formData['Files[' + index + ']'] = file.getBlob();
    index++;
  }
  
  var options = {
    'method' : 'post',
    'payload' : formData,
    'muteHttpExceptions': true
  };
 
  var response = UrlFetchApp.fetch('https://v2.convertapi.com/pdf/to/merge?Secret=', options);
  
  if(response.getResponseCode() == 200) {
    var contentText = JSON.parse(response.getContentText());
    var blob = Utilities.base64Decode(contentText.Files[0].FileData);
    folder.createFile(Utilities.newBlob(blob, 'application/pdf', 'merge.pdf'));
  }
}