What is the ArrayKit PDF page numbers tool?

It is a browser-based tool that stamps page numbers onto every page of a PDF, letting you choose the position, the number format, the starting value and the font size before downloading the paginated file.

How do I add page numbers to a PDF starting at a value other than 1?

Set the "Start at" field to any number. This is handy when cover pages or front-matter should not be counted as page one, and the "1 / N" total adjusts to match.

Where can the page numbers be placed?

Any of six positions: top or bottom, each combined with left, center or right, selected from the placement grid.

What number formats does the PDF page numbers tool support?

Three: a plain number like 1, a labeled form like "Page 1", or "1 / N" which shows the current page out of the total.

Can I change the size of the stamped numbers?

Yes, the Font size field accepts values from 6 to 48 points, and the numbers use Helvetica in a subtle gray.

Is my PDF uploaded anywhere when I add page numbers?

No. The PDF is processed locally in your browser with pdf-lib and your data never leaves your device.

Add Page Numbers

Stamp page numbers onto a PDF (position, format, start).

Your PDF is processed locally in your browser and is never uploaded to a server.

Need to stamp a CONFIDENTIAL mark too? Try the PDF Watermark tool.

About Add Page Numbers

This pdf page numbers tool stamps clean, consistent numbering onto every page of a PDF without changing the rest of your document. Upload a file, pick where the number sits, choose a format, and download the paginated result. It is built to add page numbers to a PDF for contracts, reports, manuscripts, course handouts and legal bundles where readers need to cite a page. You can paginate a PDF starting from any value, which is useful when front-matter should not count as page one. Designed for developers, QA engineers, paralegals, students and anyone who needs to number PDF pages quickly. Everything runs entirely in your browser using pdf-lib, so the file is processed locally on your device and nothing is uploaded to a server.

Features

Stamps page numbers onto every page of a PDF in one pass
Six placement options: top or bottom paired with left, center or right
Three formats: plain number, "Page 1", or "1 / N" with total count
Set a custom "Start at" value to skip cover or front-matter pages
Adjustable font size from 6 to 48 points for the stamped numbers
Uses the built-in Helvetica font in a subtle gray for unobtrusive labels
Detects the page count automatically so the "1 / N" total stays accurate
Processes the PDF entirely in your browser with nothing uploaded to a server

How to use the Add Page Numbers

Drop or select the PDF you want to paginate.
Choose a Position using the placement grid (top/bottom and left/center/right).
Pick a Format: 1, Page 1, or 1 / N.
Set the Start at value and Font size if you need to adjust them.
Download the numbered PDF once the stamp is applied.

Example

Input

Position: bottom-center
Format: 1 / N
Start at: 1
A 3-page PDF

Output

Page 1 footer: 1 / 3
Page 2 footer: 2 / 3
Page 3 footer: 3 / 3

Bottom-center pagination using the "1 / N" format on a three-page file.

Common errors & troubleshooting

Numbering should not start on the cover page. — Set "Start at" to 0 or your preferred value so the cover or front-matter is skipped or offset; the first stamped page then reflects the number you want.
The "1 / N" total looks too low after you changed the start value. — The total is derived from the start value plus the page count, so a higher start shifts both the first and last numbers; lower the start back to 1 if you want the total to match the real page count.
The stamped number overlaps existing footer text. — Switch the Position to a different corner or to top/bottom on the opposite edge so the new number clears your existing content.
Numbers look too large or too small for the page. — Adjust the Font size field; it accepts values from 6 to 48 points.

Frequently asked questions

What is the ArrayKit PDF page numbers tool?: It is a browser-based tool that stamps page numbers onto every page of a PDF, letting you choose the position, the number format, the starting value and the font size before downloading the paginated file.
How do I add page numbers to a PDF starting at a value other than 1?: Set the "Start at" field to any number. This is handy when cover pages or front-matter should not be counted as page one, and the "1 / N" total adjusts to match.
Where can the page numbers be placed?: Any of six positions: top or bottom, each combined with left, center or right, selected from the placement grid.
What number formats does the PDF page numbers tool support?: Three: a plain number like 1, a labeled form like "Page 1", or "1 / N" which shows the current page out of the total.
Can I change the size of the stamped numbers?: Yes, the Font size field accepts values from 6 to 48 points, and the numbers use Helvetica in a subtle gray.
Is my PDF uploaded anywhere when I add page numbers?: No. The PDF is processed locally in your browser with pdf-lib and your data never leaves your device.

Related tools

Watermark PDF — Add a diagonal text watermark to every page.
Merge PDFs — Combine multiple PDFs into one, with reordering.
Split PDF — Extract pages or ranges (e.g. 1-3,5,7-9) into a new PDF.
Organize PDF — Reorder, rotate and delete pages from thumbnails, then export.
Rotate PDF — Rotate all pages or a selection by 90/180/270°.
Crop PDF — Trim margins from every page via the crop box.
PDF to Text — Extract selectable text from a PDF as plain text or Markdown.
Image to PDF — Combine images into a single PDF (auto / portrait / landscape).