Count Number of Pages in PDF with Google Script

Published in: Google Apps Script - PDF

The Google Documents API doesn’t offer a method to get the number of pages in a document. Dave Lam has an interesting workaround that will not only help you count the pages in a Google Document but of any PDF file that’s in your Google Drive.

The idea is to convert the Google Document into PDF and then parse the content of the PDF document as a text file using Regular Expressions.

function countPDFPages() {

  var blob = DocumentApp.getActiveDocument().getAs("application/pdf");
  var data = blob.getDataAsString();

  var re = /Pages\\/Count (\\d+)/g;
  var match;
  var pages = 0;

  while (match = re.exec(data)) {

    var value = parseInt(match[1]);

    if (value > pages) {
      pages = value;


  Logger.log("Total PDF pages = " + pages);

  return pages;
📮  Subscribe to our Email Newsletter for Google tips and tutorials!
Published in: Google Apps Script - PDF

Looking for something? Find here!

Meet the Author

Web Geek, Google Developer Expert
Amit Agarwal

Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India. He is the developer of Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory

Get in touch

Google Add-ons

Do more with your Gmail and GSuite account

We build bespoke solutions that use the capabilities and the features of Google Workspace for automating business processes and driving work productivity.

  1. Mail Merge with Attachments
    Send personalized email to your Google Contact with a Google Sheet and Gmail
  2. Save Emails and Attachments
    Download email messages and file attachments from Gmail to your Google Drive
  3. Google Forms Email Notifications
    Send email notifications to multiple people when a new Google Form is submitted
  4. Document Studio
    Create beautiful pixel perfect documents merging data from Google Sheets and Google Forms
  5. Creator Studio for Google Slides
    Turn your Google Slides presentations into animated GIFs and videos for uploading to YouTube