How to use
- Select PDF
- Page range (blank = all) · Starting number · Number format · Position · Font size (pt) · Edge margin (pt)
- Add numbers → Download PDF
Practical examples
Assignments and reports: to leave the cover page blank and start on the body, enter a range from 2 to the last page number (for a 12-page file, "2-12") and keep the starting number at 1. Page 2 gets 1, page 3 gets 2, and pages outside the range are left untouched. Open-ended ranges such as "2-" are not accepted, and a number beyond the last page is an error.
One sequence across merged files: after merging several PDFs, choose the "1 / 10" format so the denominator shows the full page count and a reader can tell at once whether a page is missing. Landscape or rotated pages are handled individually, so the number lands in the same spot (bottom center by default) on every page.
Printing and binding: for single-sided pages bound on the left, set the position to "Bottom right" and raise the edge margin to about 36 pt (half an inch); the same margin applies to every edge. For double-sided printing the bound edge alternates between odd and even pages, so "Bottom center" is the safe choice. The font size can be anything from 6 to 48 pt; the default is 12 pt.
Check your result
When "Done. Check the downloaded PDF." appears, press "Download PDF" to save numbered.pdf; nothing downloads on its own, and the original is not modified. Open it and confirm that the first number matches the starting number, that the last number equals the start plus the number of selected pages minus one, and that no number overlaps body text. With the "1 / 10" or "Page 1 of 10" format, check that the denominator equals the total page count. Numbers are drawn in black Helvetica; if the document already had page numbers, those are kept and the new ones are added on top.
Limitations
Browser-local processing · no upload. Maximum 20MB / 500 pages. Encrypted and signed PDFs are blocked. Preservation of every advanced PDF structure is not guaranteed.
- One PDF at a time, up to 20 MB and 500 pages. Encrypted PDFs are rejected because they cannot be opened, and PDFs that contain digital signatures are rejected because altering them would break the signature.
- Existing page numbers, headers and footers are not removed. If the document already has numbers, both will show; pick a free position or remove the old numbers first.
- If the text plus twice the margin is wider or taller than the page, the tool reports that it cannot process the file. On small pages such as receipts, reduce the font size or margin.
- Write the page range as "1-3,5" (commas and hyphens). A number larger than the page count is an error.