The most common mistake here is numbering that does not match the numbers already printed on the page.
Two different kinds of thing
| Element | Where it lives | Reader sees |
|---|---|---|
| Page number | Drawn on the page | Printed text |
| Header / footer | Drawn on the page | Printed text |
| Bookmark | Document outline | A sidebar list |
| Internal link | A page annotation | A clickable region |
| Table of contents | Page content plus links | A page you can click |
The distinction matters for printing. Bookmarks are navigation and never print; a table of contents is a real page and always does. If a printed document needs a contents list, it must be a page, not an outline.
The numbering trap
A report with a cover, a contents page and roman-numeral front matter has printed page 1 at file position six or so. Stamping sequential numbers from the first file page puts a "1" on the cover and a "6" on the page that says "Page 1".
Every stamping tool offers a starting number and a page range for exactly this reason, and they are the two settings people skip.
- Decide which file page carries printed number 1. Count it once and write it down.
- Set the range to start there, so nothing is stamped on the cover or front matter.
- Set the starting number to 1 at that page, not at the file start.
- Number the front matter separately if it needs numbers, using roman numerals in a second pass.
- Check the last page, which is where an off-by-one becomes obvious.
Stamped numbers also overlay existing content — they do not push anything out of the way. If the document already has a footer, the new number lands on top of it. Position matters, and the safe place is usually a corner rather than the centre.
Numbering after a merge
This is the most common reason to stamp numbers at all: several documents combined, each with its own numbering starting at 1.
Merge first, then number the combined file in one pass. Numbering the parts separately and then merging gives you exactly the problem you were trying to solve, three times over.
The original numbers are still on the pages, so a merged document ends up with two sets. If the old ones are a problem, the choices are to place the new number somewhere the old one is not, or to re-export the parts without numbering before merging. There is no clean way to remove printed numbers from a page — they are page content like any other text.
Bookmarks are worth more than they look
A bookmark outline turns a 200-page document from a scroll into something navigable, and it costs nothing when the source has real heading styles.
Word, Docs and InDesign all convert heading styles into PDF bookmarks on export — provided you export rather than print. Print to PDF discards the outline along with the tags and the links, which is the same failure described in how to make an accessible PDF.
Building bookmarks by hand in a PDF editor is possible and tedious, and it is genuinely worth it for a long document people will reference repeatedly. For anything under about twenty pages, the sidebar adds little.
Keeping a contents list clickable
A table of contents built with Word's automatic TOC field exports with working links. One typed by hand does not, because there is nothing linking the line to the page.
Two things break an otherwise working TOC. Printing to PDF rather than exporting, which discards every link. And exporting from an application that renders the TOC as plain text — some third-party converters do this silently.
Test it by clicking an entry in the exported PDF. If nothing happens, the links were not carried and the fix is at the export step, not in the PDF. Rebuilding links by hand in an editor is possible for a short list and not worth it for a long one.
Headers and footers on a merged document
Applying a consistent header across a merged file is the tidiest way to make several documents look like one report, and it has a specific hazard.
The parts already have their own headers, in their own positions, in their own fonts. A new one stamped at the same height lands on top. Look at the assembled document before stamping and pick a band that is empty on every page.
Where the parts are too inconsistent for that, the honest answer is to re-export them from source with a shared template. Stamping over mismatched furniture produces something that looks assembled rather than authored, and readers notice.
Frequently asked questions
Why do my page numbers not match the printed ones?
Because stamping counts file position, and a document with a cover and front matter has printed page 1 at file position six or so. Set the page range to start where printed page 1 is, and set the starting number to 1 there rather than at the file start.
Can I remove existing page numbers?
Not cleanly — they are page content like any other text, so there is nothing to switch off. Either place new numbers where the old ones are not, or re-export the source without numbering. This is why merging documents that already carry numbers is awkward.
What is the difference between a bookmark and a table of contents?
A bookmark is a navigation outline stored at document level and shown in the reader sidebar — it never prints. A table of contents is a real page with clickable links, and it always prints. A printed document needs the page, not the outline.
Why did my table of contents stop being clickable?
Almost always because the PDF was made with Print to PDF, which discards every link. Export or Save As preserves them. A hand-typed contents list was never clickable in the first place — only Word's automatic TOC field creates real links.
Should I number before or after merging?
After, in one pass over the combined file. Numbering the parts separately and then merging gives you several sequences each starting at 1, which is the problem you were trying to solve.
How do I get bookmarks into a PDF?
Use real heading styles in the source document and export rather than print — Word, Docs and InDesign all convert headings into bookmarks automatically. Building them by hand in a PDF editor works but is tedious, and only worth it for long reference documents.