Stamp clean page numbers onto every page — pick the corner, the style, and the starting number, and download the numbered copy with nothing uploaded.
Court filings and legal exhibits are routinely rejected without page numbering. Universities require numbered theses. Long reports assembled from several sources — a merged PDF, a scanned appendix — arrive with no numbering at all, and reviewers who print them have no way to keep the pages in order. This tool adds the numbers afterwards, which is usually far easier than reopening the original files and re-exporting everything.
Pick one of six positions (any corner, or centered top/bottom), one of three styles — a bare 1, Page 1, or 1 of 12 — and a starting number, which is the detail submissions often hinge on: a thesis whose front matter is unnumbered can start its body at 3. Three sizes cover footnote-subtle to clearly-visible. The label is drawn with the PDF standard's built-in Helvetica font, so nothing is downloaded, the file grows by almost nothing, and the numbers print and display identically in every viewer.
The stamping is done by pdf-lib running in a background thread of your browser: the document is opened, each page gets its label drawn into the page content, and the result is saved from memory to your downloads folder. No copy of your filing, thesis, or report is sent anywhere. Existing page content isn't moved or reflowed — the number is drawn on top, close to the edge, where the margin is. You can queue several PDFs and each is numbered with the same settings; there's no account, no daily limit, and no watermark beyond the numbers you asked for.
No. The numbering is drawn into the file by code running in your browser — the document never crosses the network, and closing the tab clears it from memory.
Yes. Set any starting number — useful when a cover page or front matter shouldn't count, or when this file continues an earlier volume. The '1 of 12' style counts from your chosen start too.
Yes. They're drawn into the page content as ordinary vector text, so every viewer and printer renders them exactly the same way.
No — it only adds new labels. If a document is already numbered, adding a second set will overlap it; there's no reliable way to detect and erase existing numbers.
They sit in the outer margin (about a centimeter from the edge), where documents rarely have content. If your pages run edge-to-edge, pick a corner that's clear.