How to add page numbers to a PDF
Last updated: September 5, 2026
Page numbers seem trivial, until a 40-page PDF goes out without them and everyone cites 'the third page from the bottom'. Here's how to add numbers to a PDF after the fact, with control over format, position and where the count starts.
Use our free Add Page Numbers to PDF tool. It runs in your browser.
Numbering a PDF in five steps
- Open the Add Page Numbers tool.
- Select or drag in your PDF.
- Choose a format: plain (
1, 2, 3), labelled (Page 1), or a running count (1 / 12). - Pick one of six positions (top or bottom, aligned left, center or right) and set the font size.
- Set Start at if the count shouldn't begin at 1, then click Add page numbers and download.
Which number format sends which signal
The three formats are not interchangeable; each communicates something different to a reader.
| Format | Looks like | Use it when |
|---|---|---|
| Plain | 1, 2, 3 | You want the lightest possible mark: clean reports, printed handouts |
| Labelled | Page 1, Page 2 | The number needs to be unambiguous in a citation or a phone call |
| Running count | 1 / 12, 2 / 12 | Readers must know if a page is missing: contracts, faxes, printed packets |
The running count is quietly the most useful for anything that gets printed and handed around: "3 / 12" tells the reader at a glance that nine pages are still to come, so a stapled packet with a page stuck to the back of another is caught immediately.
Why the "Start at" field exists
Front matter is the classic reason to begin at something other than 1. A cover and a table of contents usually aren't counted, so the first "real" page is 3 or 5, the convention in books, theses and formal reports. The other common case is a document split across several files: if the first file ends on page 20, set the second to start at 21 and the numbering flows continuously across both. Either way, Start at saves you from the old workaround of deleting and re-typing numbers by hand.
Picking a position that never collides
Bottom center is the safe default. It is what most documents use and it rarely clashes with anything. Choose bottom right or left when your footer already carries text in the middle, such as a confidentiality line or a file reference. Move to a top position when footnotes live at the bottom of the page. Because the font size is adjustable, a number that crowds the edge of your body text can be dialed down a point or two rather than shoved into a corner where it looks like an afterthought.
How the numbers are drawn
Each number is written into the page's content stream as real vector text, not stamped on as a picture. That has two practical upshots: the numbers stay razor-sharp at any zoom level, and they are genuine selectable characters, so a reader can copy them and a search can find them. It also means they become a permanent part of the page: they travel everywhere the PDF goes, through every reader and every printout. That permanence is the point, but it is also why the order of operations matters.
Number last, not first
Because the numbers are fixed to the pages as they exist now, do the numbering as the final step. If you number a document and then remove pages or merge in another file, the printed "page 12" can end up physically sitting on page 9. The reliable sequence is: finalize the content, trim and merge, and only then add page numbers.
Kept on your device
Numbering runs locally in your browser, so a contract, a tax return or an internal report is never transmitted anywhere just to gain a footer. The file you download is the only copy that leaves the process, and it stays on your machine throughout. For the fuller reasoning on why that holds, see are online PDF tools safe.
Frequently asked questions
Will the numbers be real text or a picture? Real, selectable vector text embedded in the page, searchable and crisp at any zoom.
Can I skip numbering the first page? Not directly; every page in the file receives a number. To leave a cover blank, split it off, number the rest, and merge it back on.
Can I remove the numbers after downloading? Not from within this tool, because they are burned into the page content. Keep your un-numbered original if you think you will need to renumber; then just run the tool again.
What if my document already has numbers printed on it? This adds a fresh set on top; it does not detect or replace existing ones. Number a clean copy to avoid two sets of figures fighting for the same corner.
Can I use Roman numerals for front matter? The tool numbers with standard digits. A common approach is to number the main body here and leave short front matter unnumbered.