Add page numbers to a PDF

No. Mergevanta adds the numbers in your browser, so the file never leaves your device and nothing is stored. There's no size limit beyond your device's memory, and it works on iPhone, iPad and Android browsers too.

Yes. Positions are measured on the page as you see it, so “bottom right” is the bottom right of every page — including pages saved sideways or with page boxes that don't start at zero — and the numbers are always upright.

Yes. Choose Skip first page to leave the cover blank, or Page range to number only some pages. First number is the number on the first numbered page, and the rest count up from it; {total} is the last number used.

Yes. Choose Custom and type a format such as “Page {n} of {total}”. Latin text is added as real PDF text. Characters the standard PDF fonts don't include — Hindi, Arabic or Chinese, for example — are added as sharp images of the text, which look the same but can't be selected.

No. The numbers are drawn on top of the existing pages; the text, images and fonts already there are left exactly as they were.

Yes, if you know its password: the tool asks for it and uses it only in your browser tab. The numbered copy is saved without a password, so use Protect PDF if it needs one again.

With Mirror for facing pages on, numbers placed on the left or right swap sides on even pages. In a printed, double-sided book that keeps every number on the outer edge of the page.