How to Add Page Numbers to PDF Online

Online tools are more accessible than traditional software, as they can be accessed from anywhere only if there is an internet connection. And they are often compatible with multiple devices and operating systems, meaning users can access them from a wide range of devices, including desktops, laptops, and tablets. So in this post, we will focus on online tools to help you quickly add page numbers.

The Best Online Tool to Add Page Numbers to PDF – ONEPDF

ONEPDF is an all-in-one professional PDF editing tool. It will be incredibly easy to add page numbers to PDF online with it. Below is a simple step-by-step guide. 

Step 1. Open ONEPDF official site using any browser and navigate to ONEPDF All PDF Tools and then select the Page Numbers tool among the listed PDF editing tools.

ONEPDF Page Numbers Tool

Step 2. Locate the PDF file on your device that you want to add page numbers and upload it to ONEPDF Page Numbers tool. 

Step 3. Once the PDF is uploaded successfully, you can check whether the uploaded file is complete or not. Then click on “Page Numbers” to proceed.

ONEPDF Page Numbers processing page

Step 4. Now the uploaded PDF file has been added page numbers. Download it and check it again.

That’s it. And you can follow this guide to start adding page numbers to a PDF with ONEPDF. 

As a powerful online PDF editor, besides inserting page numbers into PDF, ONEPDF can do more. ONEPDF can:

  • Convert PDF files: ONEPDF can convert PDF files to various file formats such as Word, Excel, PowerPoint, JPG, PNG, and HTML.
  • Merge and split PDF files: Users can merge multiple PDF files into one document or split one PDF into several smaller documents.
  • Compress PDF files: ONEPDF can compress PDF files to reduce their file size without sacrificing quality.
  • Password Protection: ONEPDF allows users to protect their PDF files with a password.
  • Add Watermark: ONEPDF allows users to add watermarks for security.

The Second Choice for Inserting Page Numbers into PDF – Smallpdf

Smallpdf can also be used to add page numbers to a PDF online. Other functions related to PDF editing, including PDF conversion and PDF compression are also supported by Smallpdf. 

Check out this how-to guide on inserting page numbers to PDF using Smallpdf:

Step 1. Select Smallpdf Page Numbers tool and upload the PDF file you will insert page numbers to by tapping the CHOOSE FILE button.

Smallpdf Add Page Numbers

Step 2. Next, choose the position of page numbers based on your preference. Now you are able to tap the green button to go ahead to add page numbers. In our case, we choose the middle position as an example.

Choose Position to Add Page Numbers

Step 3. Tap the NUMBER PAGES button and wait for it to process the PDF. Once done, you can download the new PDF with page numbers added.

Insert Page Numbers into the PDF

Smallpdf will automatically add page numbers to the whole PDF while ONEPDF allows you to customize the page range.

How to Add Page Numbers to a PDF Using Mac Preview

For Mac users, you don’t have to depend on any online PDF editors or install third-party software, like Adobe Acrobat. Preview, the built-in program in macOS, can directly be used to put page numbers into PDFs. Read the below tutorial.

Step 1. Open the PDF file in Preview. Click on the “Show Markup Toolbar” tab.

Show Markup Toolbar in Mac Preview

Step 2. Now go head to the “Text” tab and click on it. A text box appears allowing you to enter page numbers. You can drag the text box to where you want to put page numbers and then input the page number in the box.

Put Page Numbers in PDF Using Preview

Step 3. Save the PDF file with page numbers by clicking on “File” and then “Export as PDF”.

That’s it! The page numbers will now be added to your PDF file.

Note: Mac Preview only allows you to add page numbers to one page. If you want to add page numbers to the entire PDF file, you will need to repeat these steps for each page.


Adding page numbers to a PDF is a useful feature that can benefit both the creator and the reader of the document. Besides ONEPDF and Smallpdf, there are many other online PDF editors to help you easily page numbering on the market. Quick and easy.

If you tend to use software installed on your computer, you can definitely choose Adobe Acrobat DC, the most sophisticated PDF editing software. With it, it won’t be a hard task to edit a PDF, not to mention adding page numbers. The only drawback of it is that to get access to all its features, you will have to pay at least US$19.99 per month.


Question 1. How to Delete Page Numbers in a PDF Document?

To delete page numbers in a PDF document, you can still use Adobe Acrobat DC. Just follow these steps:

Step 1. Open the PDF document in Adobe Acrobat DC and then click on the “Tools” tab and select “Edit PDF.”

Step 2. Click on the “Header & Footer” dropdown menu.

Step 3. Select “Remove” and click on “OK” to confirm.

That’s it! The page numbers should now be removed from your PDF document.

Question 2: What is Bates Numbering? 

When it comes to large volumes of PDF documents, you might want to add Bates numbering to PDFs. 

Bates numbering is a method of numbering legal documents and other types of files for identification, reference, and organization purposes. Typically, Bates numbering involves adding a unique identifier to each page of a document or file, such as a numeric or alphanumeric value.