ToolZeno

Add Page Numbers to PDF

Add page numbers to PDF files online for free. Customize font, size, position, starting number, and numbering format client-side with 100% offline privacy.

What is a PDF Page Numbering Tool?

Overview and core technical concepts

A PDF Page Numbering tool stamps customizable page numbers (Page X of Y, Bates numbering, headers, footers, margins, font styles) across PDF documents client-side.

Formats: 'Page X', 'Page X of Y', or custom prefix text
Positioning: Top Left, Top Right, Bottom Center, Bottom Right, etc.
Custom font sizes, colors, and margin offsets
Option to skip numbering on cover page

Why Add Page Numbers to PDFs?

Key advantages, developer speedups, and security benefits

Legal & Court Filing Bate Stamps

Stamp sequential page numbers on legal discovery evidence files.

Academic Manuscripts & Reports

Add clean header/footer page numbers to research papers and corporate proposals.

When Shouldn't You Add Footers?

Anti-patterns, limitations, and when to choose an alternative approach

Diagonal Watermark Stamps

To stamp diagonal text like 'CONFIDENTIAL' across page centers, use PDF Watermark.

Recommended Alternative: PDF Watermark

Page Numbering Format

Sample inputs, expected outputs, and code patterns

Footer Page Numbering

Expected Output
Stamping 'Page 1 of 12' in Bottom-Right margin (Skipping Cover Page)

Common Page Numbering Mistakes

Frequent errors, security risks, and how to fix them

Overlapping Footer Text
The Mistake:Placing page numbers over existing footer text without adjusting margin offsets.
The Impact:Obscures document footer text.
How to Fix:Adjust bottom margin offset sliders to position numbers cleanly.

Frequently Asked Questions

PDF page numbering is the process of adding sequential numbers to the pages of a PDF document. It helps organize documents, reports, academic papers, and legal files, making it easy to cite pages, browse content, and maintain professional structures.

Yes, absolutely. ToolZeno processes all files completely inside your web browser using HTML5 sandboxing and local RAM. No file data is ever transmitted to an external server or saved in a cloud repository, ensuring complete privacy-first execution.

Yes. ToolZeno provides flexible page target controls. You can apply numbering to all pages, the first page only, skip the first page (ideal for cover sheets), only odd pages, only even pages, or enter a custom range of pages (for example: '1-3, 5, 8-12').

We support standard formats such as standard numbers (1, 2, 3...), padded numbers (01, 02, 03...), Page N structures ('Page 1'), Page N of M structures ('Page 1 of 10'), and custom prefix/suffix setups where you specify the text to append or prepend.

Yes. You can configure any starting number in the customizer. We also support section numbering restarts where you can specify that numbering resets back to your start number every X pages.

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