ocrtest.gs

function myFunction() {
  var imageBlob = UrlFetchApp.fetch("https://saitodev.co/site/sample/blog_cap.jpg").getBlob();
  var resource = {
    title: imageBlob.getName(),
    mimeType: imageBlob.getContentType()
  };
  var options = {
    ocr: true
  };
  var file = Drive.Files.insert(resource, imageBlob, options);
  var doc = DocumentApp.openById(file.id);
  var text = doc.getBody().getText();
  Logger.log(text)

}