Add Page Numbers: how it works
To add page numbers to a PDF, open the Add Page Numbers tool, add your file, choose the position, format, and starting number, and download. Numbers are stamped in your browser and the file is never uploaded.
How to use Add Page Numbers
- Open the Add Page Numbers tool and add your PDF.
- Choose position, number format, and starting value.
- Download the numbered PDF.
In your browser vs. uploading to a server
Best for paginating a report or contract before printing or sending, with control over where numbering starts.
Frequently asked questions
How do I add page numbers to a PDF?
- Open the Add Page Numbers tool, set the position and starting number, and download; the numbers are stamped onto every page in your browser.
Are my files uploaded to a server?
- No. PDFER runs entirely in your browser using WebAssembly and JavaScript. Your files are read into memory on your device, processed locally, and never sent to PDFER or any third party. Closing the tab or leaving the tool erases them from memory.
PDFER is a privacy-first PDF toolkit built by Kiril Urbonas. Every tool runs entirely in your browser — see our security model and privacy policy.