No. Everything happens in this browser tab, on your own device. There is no upload endpoint and no server-side processing, so the file never leaves your machine — you can disconnect from the network after the page loads and it still works.

Can I start numbering from something other than 1?

Choose a page range so numbering begins where you want it. The numbers follow the current page order, so reorder the document first if you plan to.

Add page numbers to a PDF

Add page numbers in any corner, using placeholders like {page} and {pages}. The same panel handles headers and footers, including the date and the file name.

How to do it

Open the PDF.
Open the page numbers panel.
Choose the format, position and page range.
Download.

Why nothing is uploaded

Most online PDF tools work by sending your file to a server, editing it there, and sending it back. That means contracts, medical records, bank statements and passports all end up on someone else's machine, and you are trusting a privacy policy about what happens next.

This editor does the work in your browser instead. The PDF is read by this tab, rendered with pdf.js and written back out with pdf-lib, both running as ordinary JavaScript on your own device. There is no upload endpoint, because there is no server doing any of this. Once the page has loaded you can disconnect from the network entirely and everything still works.

Questions

Is my file uploaded?: No. Everything happens in this browser tab, on your own device. There is no upload endpoint and no server-side processing, so the file never leaves your machine — you can disconnect from the network after the page loads and it still works.
Can I start numbering from something other than 1?: Choose a page range so numbering begins where you want it. The numbers follow the current page order, so reorder the document first if you plan to.

Related tools

Add a watermark to a PDF — Stamp DRAFT, CONFIDENTIAL or any text across every page, with control over size, angle and opacity. Runs in your browser.
Merge PDFs — Combine several PDFs into one, in your browser. Nothing is uploaded, there is no account, and there is no page limit.
Split a PDF — Split a PDF into several files, or pull out a range of pages, entirely in your browser. No upload and no account.
The full editor — annotate, sign, fill forms, redact, OCR and more.

Part of messy-ui. Free, open source and account-free — see also the countdown timer.