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— section: Hypertext and PDF permalink: /FAQ-pdfpagelabels date: 2014-06-10 —

# [`Hyperref`](https://ctan.org/pkg/Hyperref) and repeated page numbers

The [`book`](https://ctan.org/pkg/book) class (and its friends and relations) automatically changes the display of page numbers in the frontmatter of the document to lower-case roman. This is fine for human readers, but if [`hyperref`](https://ctan.org/pkg/hyperref) has been misconfigured, the existence of pages have the same page number can cause problems. Fortunately, the configuration options to make [`hyperref`](https://ctan.org/pkg/hyperref) do the right thing are (by default) set up to avoid problems.

The two options in question are:

- `plainpages=false` Make page anchors using the

formatted form of the page number.  With this option,
[`hyperref`](https://ctan.org/pkg/hyperref) writes different anchors for pages ''ii'' and ''2''.
(This is the default value for the option, which is a 
_good thing_…)
If the option is set `true` [`hyperref`](https://ctan.org/pkg/hyperref) writes page
anchors as the arabic form of the page number, rather than the
formatted form that gets printed; this is not usually appropriate.

- `pdfpagelabels` Set PDF page labels; i.e.,

write the value of `\thepage` to the PDF file so that
Acrobat Reader can display the page number as (say) ''ii (4
of 40)'' rather than simply ''4 of 40''.

The two should be used whenever page numbering is not just 1…n; they may be used independently, but usually are not.

The recipe isn't perfect: it relies on `\thepage` being different for every page in the document. A common problem arises when there is an unnumbered title page, after which page numbers are reset: the pdfTeX warning of [duplicate destinations](FAQ-hyperdupdest.md) will happen in this case, regardless of the options.

3_composition/texte/pages/numerotation_des_pages/hyperref_et_les_numeros_de_pages_identiques.1527238730.txt.gz · Dernière modification: 2018/05/25 08:58 de joseph.wright
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