PDF Utilities

Add Page Numbers to PDF

Stamp clear, customizable page numbers onto every page of your PDF file instantly in your browser.

100% Private · Runs locally in your browser 0 KB Uploaded

How Local Processing Works

1

Selected in Browser Memory

When you select or drop a file, your browser creates a temporary local Blob / ArrayBuffer pointer directly in your device's RAM.

2

Processed Client-Side

Our client-side engine (pdf-lib) processes the data directly using your computer or phone's CPU.

3

Saved Directly to Your Downloads

The resulting output is downloaded immediately to your device. When you close or refresh the tab, memory is cleared automatically.

Verify It Yourself

Open your browser's Developer Tools (F12 or Ctrl+Shift+I), switch to the Network tab, and convert any file. You will see zero network POST requests carrying file data.

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Click to browse or drop your PDF here

Select any PDF document · Processed 100% in local RAM

How to Add Page Numbers to PDF Files

When compiling academic papers, legal exhibits, or business proposals, adding sequential page numbers ensures readers can easily reference specific pages. FreeFileTool adds page numbering to your PDF documents locally without uploading your files to remote web servers.

Quick Steps

  1. Select PDF: Drop or select your file.
  2. Configure settings: Pick position (bottom center, top right, etc.) and format ("Page X of Y").
  3. Apply & Download: Click the process button to stamp page numbers onto all pages instantly.

Frequently Asked Questions

How do I add page numbers to a PDF?

Select your PDF file, choose your preferred page number format (e.g. 'Page X of Y' or 'X') and position (top/bottom left, center, right), then click 'Add Page Numbers' to download the updated PDF.

Are my documents uploaded to a cloud server?

No. All page numbering calculations and text placement occur entirely inside your web browser using pdf-lib. No files ever leave your device.

Can I customize the font size and margins for the page numbers?

Yes, you can adjust font size, edge margins, and text position (bottom center, top right, etc.) before exporting.