Add page numbers to PDF

Add Page Numbers to PDF, Free, Instant, and Fully Private

This tool lets you insert page numbers into any PDF document in seconds, directly in your browser. Choose the position (top or bottom, left, center, or right), the starting number, font size, and format, then download your numbered PDF instantly.

Your files never leave your device. There is no upload to any server, no account required, and no size limit enforced by a backend. The entire process runs locally using JavaScript, which means your documents stay 100% private, whether they contain contracts, medical records, academic papers, or financial reports.

How to Add Page Numbers to a PDF

1. Open your PDF. Click "Choose file" or drag and drop your PDF into the tool area. The file loads directly in your browser, nothing is transmitted online.
2. Configure the numbering. Select where the page number should appear (header or footer), the horizontal alignment (left, center, right), the starting number, and the font size.
3. Preview if needed. Some options let you preview the result on a sample page before processing the full document.
4. Download your PDF. Click "Add page numbers" and save the processed file to your device. Done, no watermark, no sign-up prompt, no email required.

Why Use This Tool

• Completely free. No subscription, no credit system, no hidden paywall after a certain number of pages.
• 100% local processing. Everything runs inside your browser using PDF-lib. Your file is never uploaded to a server, not even temporarily.
• No privacy risk. Sensitive documents (legal filings, medical PDFs, internal reports) can be processed without any exposure to third-party infrastructure.
• No watermarks. The output file is clean, just your document with page numbers, nothing added by us.
• Works on any device, unlimited. Use it on desktop, tablet, or mobile. Process as many PDFs as you need, as often as you need, there are no daily limits.

When You Actually Need This

Adding page numbers to a PDF is a practical requirement in many real situations: academic dissertations and theses that must follow a specific formatting standard before submission, legal documents or contracts shared between multiple parties that need clear page references during review, and business reports or slide decks exported from tools like Google Slides or Keynote that strip pagination from the PDF output. In all these cases, you need a quick, reliable way to number pages without sending files to an unknown server.

Frequently Asked Questions

Can I add page numbers to a PDF without Adobe Acrobat?

Yes. Adobe Acrobat is one option, but it requires a paid subscription for most PDF editing features. This tool lets you add page numbers for free, directly in your browser, without installing any software. It works on Windows, macOS, Linux, iOS, and Android.

Can I start the page numbering from a specific page or number?

Yes. You can set a custom starting number, useful if your document has a cover page or a table of contents that should not be counted in the visible numbering. For example, you can start printing page numbers from page 3 of the PDF while labeling it as "1".

Is there a file size limit for adding page numbers to a PDF?

There is no server-side size limit because files are never uploaded. The practical limit depends on your device's available memory. Most standard PDFs, including multi-hundred-page documents, process without issues on a modern laptop or desktop. Very large PDFs with many high-resolution images may be slower on low-memory devices.

Will adding page numbers to my PDF change the formatting or fonts?

No existing content is modified. Page numbers are added as a new overlay layer on each page using a standard font. The original text, images, layout, and embedded fonts remain untouched. The only change to the document is the addition of the numbering element in the position you selected.

Can I add page numbers to a password-protected PDF?

Password-protected PDFs that restrict editing cannot be modified without first removing the password protection. If your PDF is locked, you will need to unlock it first, this tool includes a separate PDF unlock utility for that purpose. Once unlocked, you can add page numbers normally.