Google-apps-script – convert a MS Word document to a Google Document format using GAS

To convert a document, right click on it inside Google Drive. Choose Open with → Google Docs. A new window will be opened with the document in Google Docs format and it is saved inside the same folder in your Google Drive.

With this little script you can change the headings automatically. Especially useful when the different headings are convoluted.

Code

function changeHeading() {
  var pars = DocumentApp.getActiveDocument().getBody().getParagraphs();  
  for(var i in pars) {
    var p = pars[i], h = p.getHeading(), d = DocumentApp.ParagraphHeading;
    switch(h) {
      case h.HEADING1:
        p.setHeading(d.HEADING2);
        break;
      case h.HEADING2:
        p.setHeading(d.HEADING1);
        break;
    }
  }
}

Explained

First all paragraph types are collected. Then these are checked for headings. If a heading matches Heading 1, then it's changed to Heading 2 etc.

Add this script in your Google Document under Tools > Script editor.... Press the "bug" button to authenticate the script.