100% In-Browser Memory • Zero Cloud Uploads

Add Page Numbers to PDF

Stamp custom header or footer numbers, Roman numerals, and page counts onto your PDF with live visual position controls.

Choose a PDF file or drop here

Open file to configure header/footer position, typography, colors, cover skipping, and live preview.

Document.pdf

0 MB • 0 Pages

1. Page Number Position (6 Hotspots)

Selected: Bottom-Right

2. Number Format

3. Typography & Appearance

Font Family

Size: 11pt

Text Color

Margin from Edge

4. Cover & Page Range Skip first page (Do not number cover page)

From Page

To Page

First number to display

Page 1 of 1

Live Stamp Preview

Free Online PDF Page Numbering — Add Custom Header & Footer Numbers

Adding continuous page numbers, headers, or footers to PDF files is essential when compiling academic research papers, corporate reports, court filings, and published ebooks. With SlowPDF Add Page Numbers, you can easily stamp custom pagination onto your documents directly inside your browser memory with zero quality degradation and complete privacy.

1 How to Add Page Numbers to PDF in 3 Easy Steps

Upload PDF: Drag and drop your multi-page PDF document into the SlowPDF upload box.
Select Visual Position & Format: Click any of the 6 hotspot zones on our interactive page mockup (Top-Left, Top-Center, Top-Right, Bottom-Left, Bottom-Center, Bottom-Right) and choose your preferred font, color, and number format.
Download Paginated PDF: Click "Apply Page Numbers & Download PDF". SlowPDF stamps clean vector page numbers directly onto your document in local browser RAM.

Why SlowPDF is the Best Private Numbering Tool

Unlike cloud services that upload confidential documents to external servers, SlowPDF calculates exact point coordinates and stamps vector typography completely inside local browser RAM using WebAssembly and pdf-lib.

100% Client-Side Privacy: Your sensitive financial statements and legal filings never touch remote servers.
Precision Point Alignment: Calculates text metrics using font.widthOfTextAtSize() for perfect centering and right-edge alignment.
Flexible Cover Logic: Easily skip cover or title pages and set starting number offsets.
Zero Compression Loss: Preserves original document clarity, embedded images, and vector graphics.

Next Steps After Adding Page Numbers

Once your document is paginated, explore our companion browser tools to further organize and protect your files:

After numbering legal documents, add password encryption with Protect PDF. Combine multiple files before adding continuous numbers using Merge PDF. Reduce file size after adding page numbers with Compress PDF. Fix sideways pages before applying headers with Rotate PDF.

Frequently Asked Questions

Everything you need to know about stamping page numbers on SlowPDF.

Yes! Check the 'Skip first page' option or specify a custom start range (e.g. From Page 2) to leave your cover page unnumbered.

SlowPDF features an interactive 3x2 visual page mockup. Click any of the 6 hotspot zones (Top-Left, Top-Center, Top-Right, Bottom-Left, Bottom-Center, Bottom-Right) to place numbers in headers or footers instantly.

Yes. Choose the 'Page X of N' or 'X of N' format preset card in the numbering controls panel.

No. SlowPDF draws vector text objects directly onto original page canvases using pdf-lib. Existing text sharpness, vector artwork, and high-resolution images are 100% preserved.

Yes! Select the 'Roman Numerals (I, II, III...)' format option in the studio controls.

SlowPDF calculates exact page coordinates dynamically for every individual page based on its width and height, ensuring numbers are always positioned consistently.

Yes! SlowPDF is 100% free with zero watermarks, zero limits, and zero mandatory registrations.

Never. All document processing happens exclusively inside your local browser RAM using WebAssembly. No files leave your physical device.

Yes. You can customize font family (Helvetica, Times, Courier), font size (8pt to 18pt), text color swatches or custom color picker, and edge margins.

Yes! SlowPDF adapts dynamically with a mobile-optimized stacked view and live document preview that works smoothly on iOS Safari and Android Chrome.