Insert PDF Page Numbers
Add custom page numbers to your PDF documents instantly. Choose position, format and font size, then download your new numbered PDF.
Updated: November 2025 • 100% browser-based • PDF files only (max 50 MB)
Privacy notice: This tool works entirely in your browser using JavaScript and PDF-lib. Your PDF is never uploaded to the server; all processing happens locally on your device.
About Insert PDF Page Numbers Tool
The DevineTools Insert PDF Page Numbers tool lets you quickly add page numbers to PDF files without installing software. It is ideal for academic papers, business reports, legal documents and any multi-page PDF that needs clear numbering.
You can choose from multiple page number positions (top or bottom, left, center or right), different number formats such as “Page X of Y” or simple numbers, and adjust the font size for readability. Because everything runs in your browser, your files remain private and never leave your device.
How to Add Page Numbers to a PDF Online
- Click the “Click to upload or drag and drop” area and select your PDF file.
- Choose the position where you want the page numbers to appear.
- Select a format like “Page {n}” or “Page {n} of {total}”.
- Set the font size and starting page number if needed.
- Click “Add Page Numbers” and wait for processing to finish.
- Your browser will automatically download the new PDF with page numbers added.
Key Features
- Custom positions: top left, top center, top right, bottom left, bottom center, bottom right.
- Flexible formats: simple numbers, “Page X”, “Page X of Y” and more.
- Starting number control: begin numbering from any page number (1, 2, 3…).
- Adjustable font size: from 8 pt to 48 pt for better readability.
- Browser-based processing: no uploads, better privacy for sensitive PDFs.
- Free and fast: no registration, no watermark, no installation required.
Why Add Page Numbers to a PDF?
Page numbers make long documents easier to read, reference and print. They help readers keep track of where they are in a report, contract or manual, and they simplify navigation when discussing specific pages with others.
Frequently Asked Questions
Are my PDF files uploaded or stored?
No. The Insert PDF Page Numbers tool runs entirely in your browser using PDF-lib. Your file is processed locally and is not uploaded to DevineTools servers.
Is there a page or size limit?
The tool is designed for PDFs up to about 50 MB. Very large files may depend on your device memory and browser performance.
Can I start numbering from a different number?
Yes. Use the Starting page number field to begin numbering from any number, which is useful when your PDF is part of a larger document series.
What number formats are supported?
You can use simple numbers ({n}), “Page {n}”, “Page {n} of {total}” and “{n} / {total}”. These cover the most common styles used in reports, books and legal documents.
Is this PDF page numbering tool free?
Yes, the DevineTools PDF page numbering tool is free to use, with no sign-up required and no watermark added to your documents.
Disclaimer: Although processing is local to your browser, always double-check the resulting PDF to ensure page numbers appear correctly before sharing or printing important documents.