About Add Page Numbers
Add Page Numbers stamp page numbers in common positions. Everything runs locally in your browser — no cloud upload.
The PDF Tools Suite uses Web Workers and open libraries such as pdf-lib and Mozilla PDF.js so your documents stay on your device.
How to use Add Page Numbers
- 1. Add your file Drag a PDF onto the drop zone or use the file picker.
- 2. Configure Adjust tool options if shown, or select pages in the preview grid.
- 3. Process and download Click Process, wait for completion, then download your result.
Frequently asked questions
Do my files leave my device when I use Add Page Numbers?
- No. Processing runs in your browser inside a Web Worker. Files are not uploaded to our servers.
What is the file size limit?
- Each file can be up to 50 MB in the browser workspace. Larger files may fail depending on available memory.
How do I get started with Add Page Numbers?
- Stamp page numbers in common positions Open the tool, add your file, then click Process.