SantoshTec PDF

Add page numbers to a PDF

Number a document properly before you print, bind or submit it. Control the position, the format, where numbering starts and what number it starts at.

Drop the PDF you want to number

Numbered on this device, nothing uploaded.

    Set to 2 to skip a cover page.
    Useful when a document continues from another.

    Nothing is uploaded. This page opens and rewrites your PDF using your own browser's memory, then shows you the finished pages so you can check them before you download.

    Using Page numbers, step by step

    1. Drop the finished PDF onto the box above — number it after any reordering is done.
    2. Choose where the number sits, what format it takes, and which page the numbering starts on.
    3. Set a starting number if the document continues from another one.
    4. Press Add page numbers and download.

    Why an unnumbered document costs everyone time

    Page numbers are invisible when present and conspicuous when absent. Their real function is not navigation but reference: they let two people discuss a document without being in the same room. "The clause on page 7" is unambiguous; "the clause about three-quarters of the way down, after the table" is not, and every exchange like that costs a round trip.

    They also make a document repairable. A printed stack that gets knocked over is a puzzle without numbers and a two-minute job with them. Anyone who has dropped an unnumbered contract on the way to a meeting learns this once and never again.

    And for anything submitted formally — a tender, a court bundle, a thesis, a grant application — numbering is frequently a stated requirement, checked before the content is even read. It is the cheapest possible way to avoid a rejection on process grounds.

    Choosing a format that fits the document

    Plain numbers are correct for most things. They are unobtrusive and universally understood, and they are what books, reports and articles use.

    "Page 1 of 20" earns its extra words in exactly one situation: documents that get printed and handed over physically. The total tells the recipient immediately whether they have everything, which matters for contracts, legal bundles and anything sent by post. For a document that will only be read on screen, the reader can already see the total, and the extra text is noise.

    The dashed style is a typographic convention from formal and academic publishing. It looks considered on a thesis or a report and slightly precious on an invoice.

    The two settings people confuse

    "Start numbering from page" and "first number shown" do different things, and understanding the difference solves most numbering problems in one go.

    The first controls which physical pages get a number at all. Set it to 2 and the cover stays clean. The second controls what number the first numbered page displays. Set it to 1 and your first content page reads "1" even though it is the second sheet in the file.

    Together they cover the normal cases. A report with a cover page: start from 2, first number 1. Volume two of a bundle that continues from a 40-page volume one: start from 1, first number 41. A document with a cover and a contents page that should not be numbered: start from 3, first number 1.

    Number last

    This is the one rule that matters. Numbering must be the final structural step, after merging, after reordering, after deleting anything unwanted. A document whose printed numbers disagree with its actual page order is worse than an unnumbered one, because it actively misleads a reader who trusts it. Compression is the only step that should come afterwards, since it changes bytes rather than sequence.

    Frequently asked questions

    Can I skip the cover page?

    Yes. Set "start numbering from page" to 2 and the cover is left clean. If you also want the first numbered page to read "1" rather than "2", set the starting number to 1 — the two settings are independent for exactly this reason.

    What if the page already has a number printed on it?

    You will get two. This tool adds a number, it cannot detect or replace one that is already part of the page content. Choose a different position — if the existing number is centred at the bottom, put yours bottom right — or number a version that does not already have them.

    Will the numbers cover my text?

    They are placed in the page margin, which is empty on the overwhelming majority of documents. If your document runs very close to the edge, increase the margin setting to push them further out, or choose a position on the opposite side.

    Do the numbers work if I print the document?

    Yes — they are real page content, not a viewer overlay. Do keep the margin at 28 points or more, though, since home and office printers cannot print right to the edge of a sheet and a number too close to it may be clipped.

    Should I number before or after merging?

    Always after. Numbering first and then merging gives you a document whose printed numbers restart partway through, which is more confusing than having none at all. Merge, reorder, then number, then compress.

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