Add Page Numbers to PDF Online Free — Header & Footer Numbering Tool

Overview: Insert customizable page numbers and header text into any PDF document offline.

Add sequential page numbers, headers, and footers to PDF pages. Position at top or bottom with custom formats (e.g. Page 1 of N). All computations and data processing are executed 100% locally on your device using client-side WebAssembly, HTML5 Canvas, and modern Web APIs without uploading files to any external server.

Supported Formats

PDF Page Number & Header/Footer supports the following file formats:

  • PDF — client-side processing support.

How to Use PDF Page Number & Header/Footer in Browser

  1. Upload PDF: Select or drop your PDF document.
  2. Choose Layout: Select position (bottom-center, top-right, etc.) and format ('Page 1 of N').
  3. Download PDF: Click 'Add Page Numbers' to download the numbered PDF immediately.

Key Features & Privacy Protections

  • 100% Client-Side Privacy: Zero cloud upload. Your documents, photos, and files never leave your local browser sandbox.
  • Zero Installation: Runs instantly in Chrome, Safari, Firefox, Edge, Android, and iOS browsers.
  • Free Forever: No sign-up, no subscriptions, no ads, and no file size limits.

Frequently Asked Questions (FAQ)

Can I skip numbering the first page (cover page)?

Yes, toggle the 'Skip First Page' option to leave your cover or title page unnumbered.

What page number formats are supported?

Supported formats include single digit ('1'), 'Page 1', 'Page 1 of 10', '1 / 10', and '- 1 -'.

Are my confidential PDF documents uploaded anywhere?

No, all page numbering calculations and vector typography are processed locally inside your browser via pdf-lib.

Can I customize the font size, margin, and color?

Yes, you can adjust font size (8-20pt), edge margin (15-60pt), and choose any custom text color.

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PDF Page Number & Header/Footer

100% Private (Client-Side)•Zero Server Upload

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v1.0.0Free · pdf-libPDF Tools

Add Page Numbers to PDF Online Free — Header & Footer Numbering Tool

Insert customizable page numbers and header text into any PDF document offline.. Add sequential page numbers, headers, and footers to PDF pages. Position at top or bottom with custom formats (e.g. Page 1 of N).

What is Page Numbers and what does it do?

The PDF Page Number & Header/Footer tool allows users to insert sequential page numbers, custom document headers, and pagination footers across multi-page PDF documents entirely in their browser.

With configurable page formatting ('Page 1 of N', '1 / N', '- 1 -'), placement positions (Top/Bottom, Left/Center/Right), edge margins, font sizes, and custom colors, you can paginate documents without sending private files to external servers.

  • Add page numbers to multi-page PDFs with formats like 'Page X of Y', 'X / Y', or single digits.
  • Six flexible positions: Bottom Center, Bottom Right, Bottom Left, Top Center, Top Right, Top Left.
  • Toggle to skip numbering the first page (cover or title page).
  • Customizable typography: adjust font size (8-20pt), edge margins (15-60pt), and custom text colors.
  • 100% private in-browser document processing using pdf-lib with zero server uploads.

How does Page Numbers work?

The PDF byte stream is parsed into an in-memory document tree via pdf-lib. The StandardFonts.Helvetica font dictionary is embedded into the document for vector typography.

For each page, dimensions are computed to calculate exact typographic baseline offsets according to the selected position and margin settings. The document is serialized into a downloadable binary blob locally.

100% private: all processing happens locally in your browser using client-side WebAssembly, HTML5 Canvas, and modern Web APIs. Your files are never uploaded to any server.

Who needs Page Numbers?

Lawyers & Paralegals

Add Bates numbering and sequential page pagination to legal exhibits, filings, and case documents.

Students & Academic Researchers

Number research reports, thesis papers, and journal article drafts to meet institutional submission requirements.

Corporate Accountants & Analysts

Paginate multi-page financial statements, budget audits, and quarterly reports before executive reviews.

Educators & Workshop Instructors

Format course syllabi, lecture slide handouts, and student study guides with clear header and footer numbering.

Supported file formats

PDF Page Number & Header/Footer processes the following file extensions and data formats directly in your browser:

PDF

How to use Page Numbers — step by step

  1. 1

    Upload PDF

    Select or drop your PDF document.

  2. 2

    Choose Layout

    Select position (bottom-center, top-right, etc.) and format ('Page 1 of N').

  3. 3

    Download PDF

    Click 'Add Page Numbers' to download the numbered PDF immediately.

Frequently asked questions

Can I skip numbering the first page (cover page)?

Yes, toggle the 'Skip First Page' option to leave your cover or title page unnumbered.

What page number formats are supported?

Supported formats include single digit ('1'), 'Page 1', 'Page 1 of 10', '1 / 10', and '- 1 -'.

Are my confidential PDF documents uploaded anywhere?

No, all page numbering calculations and vector typography are processed locally inside your browser via pdf-lib.

Can I customize the font size, margin, and color?

Yes, you can adjust font size (8-20pt), edge margin (15-60pt), and choose any custom text color.

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