OOnDevice

Add Page Numbers

Add page numbers to any PDF — right in your browser. Choose position, font size, and starting number.

Works offlineNothing uploaded

Drop a PDF here — it stays on your device

Add page numbers to your PDF

Files stay on your device

Upload a PDF to add page numbers.

How to use it

1

Upload PDF

Click the upload area or drag and drop your PDF file.

2

Configure numbering

Choose the position, format, and starting number for page numbers.

3

Apply and download

Click Apply and download your numbered PDF file.

When to use Add Page Numbers

A legal intern assembling discovery documents needs page numbers on a 120-page exhibit binder so that counsel can cite "Exhibit A, page 47" in a motion. Or you've built a detailed proposal in sections from different source files and the reviewer needs a way to reference specific pages during a call. Upload the merged PDF, choose a corner position, set the font size, and pick which page to start counting from — then pdf-lib stamps the number onto every page on your computer and hands you back a print-ready document. The numbering is rendered directly into the page content, not as an annotation layer, so it appears in every reader and survives printing without any special handling.

  • Number a 120-page discovery exhibit binder before filing with a court
  • Add page numbers to a multi-section proposal before a client review call
  • Start page numbering at 3 to skip a cover and table-of-contents page

About this tool

You've assembled a 40-page report and the reviewer asks: "can you add page numbers?" This tool does that in under a minute — upload the PDF, choose where numbers appear (top or bottom, left, center, or right), set the font size and starting number, and download the updated file. Useful for formal documents, academic submissions, legal briefs, or any PDF you're about to present to someone who'll want to reference specific pages. Numbers are stamped directly in your browser — your document stays on your machine throughout.

Frequently asked

Is this PDF page numbering tool private? Do you upload my PDFs?
No uploads. pdf-lib stamps numbers onto every page in this browser tab — your document stays on your machine throughout, so legal briefs and internal reports never reach an outside server.
How do I add page numbers to a PDF?
Upload your PDF, choose the position and style for page numbers, then click Add Page Numbers. Download the result instantly.
Can I choose where page numbers appear?
Yes. You can place page numbers at the top or bottom of the page, aligned left, center, or right. You can also set the font size and starting number.
Does this work on large PDFs?
Yes. pdf-lib stamps numbers on every page locally, so throughput scales with your device rather than a server queue. Most documents finish in a few seconds.