How to Add Page Numbers to a PDF
Page numbers are invisible until they're missing — usually discovered as a stack of printed, unordered paper hits the floor. Merged files, scans and slide exports almost never arrive numbered; here's how to fix that properly.
Pick a format deliberately
- 1, 2, 3 — minimal and right for most documents.
- Page 1 — the formal register of reports and legal filings.
- 1 / 12 — self-verifying: the reader knows immediately if a page is missing. Best for handouts, applications and anything printed and passed around.
Position: convention has opinions
Bottom center is the neutral default that never fights headers. Bottom right(or the outer corner) is where flipping thumbs actually look — common in books. Top positions suit documents whose footers are occupied. The practical rule: put numbers where the page has margin to spare, and keep them out of the content's way — a modest size in gray reads as furniture, not content.
The cover page problem
Title pages traditionally go unnumbered, with numbering starting at 1 on the first content page. With a browser toolchain the recipe is: split the cover off, number the body starting at 1, then merge the cover back on. Three steps, no uploads, typographically correct.
Continued documents
When chapter 2 lives in its own file but follows page 44, start its numbering at 45 — that's exactly what a custom start number is for. The same trick handles appendices, exhibit bundles and anything assembled from parts that must read as one continuous document.
Why number at all?
Numbers turn “the page with the chart” into “page 7” — reference, not description. They let a court clerk confirm a filing is complete, a teacher know a handout survived the copier, and a meeting move faster. The 1 / 12format even carries its own integrity check. For anything printed, they're the cheapest insurance a document can buy.
Number yours in seconds
The PDF page numbers tool offers six positions, all three formats, custom start numbers and adjustable size — processing the file entirely in your browser. It slots neatly at the end of the assembly line: merge, reorder, watermark, then number.