95

I get the following warning

pdfTeX warning (ext4): destination with the same identifier (name{page.1})
has been already used, duplicate ignored

when compiling the following document:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{hyperref}

\title{[Title]}
\author{N.N.}

\begin{document}

\begin{titlepage}
\maketitle
\thispagestyle{empty}
\end{titlepage}

\tableofcontents
\thispagestyle{empty}

\newpage

\section{[Section]}

\end{document}

I have tried find ways to get rid of this warning by searching in other places and I have read PDFTeX destination … ignored and the other question in this place pdfTeX warning: destination with same identifier has been already used, duplicate ignored (weird behavior).

  • 2
    See this FAQ answer – Lev Bishop May 24 '11 at 6:29
  • 1
    I've tried what that FAQ describes without success. – N.N. May 28 '11 at 9:15
  • 1
    Sure, the FAQ explains that when there is a separate unnumbered title page (as you have here) then the technique will not help. – Lev Bishop Jun 2 '11 at 0:56
  • 1
    Just came upon this thread. My problem is that the style file I'm required to use kills \thepage with the line \let\thepage\relax. I've tried the recommendation in the FAQ entry to no avail. – Suresh Mar 26 '12 at 1:32
  • 1
    @N.N. I answered here because both the FAQ soln here AND the answer below don't work. so I wasn't sure where to comment. – Suresh Mar 26 '12 at 13:21
70

One way to avoid the problem is to change the (invisible) numbering style of the title page:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[pdfpagelabels]{hyperref}

\title{[Title]}
\author{N.N.}

\begin{document}

\pagenumbering{Alph}
\begin{titlepage}
\maketitle
\thispagestyle{empty}
\end{titlepage}
\pagenumbering{arabic}

\tableofcontents
\thispagestyle{empty}

\newpage

\section{[Section]}

\end{document}
  • 58
    Another way to solve it is to disable the pageanchors for the titlepage with \hypersetup{pageanchor=false} and reactivate them later. – Ulrike Fischer May 24 '11 at 8:03
  • 2
    @UlrikeFischer: I see the difference in the PDF file between the two solutions (the one answered and yours), but which one would be a best practice? – sirdharma Oct 18 '11 at 3:48
27

As requested by the comments: Another way to solve it is to disable the pageanchors for the titlepage:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[pdfpagelabels]{hyperref}

\title{[Title]}
\author{N.N.}

\begin{document}

\hypersetup{pageanchor=false}
\begin{titlepage}
\maketitle
\end{titlepage}

\hypersetup{pageanchor=true}
\pagenumbering{arabic}
\tableofcontents

\section{[Section]}
\end{document}

It is a matter of taste which solution is better. hyperref needs page anchors with unique names e.g. to add links to the index. Changing the page numbering style as Enrico did in his answer is a logical and adequate method to do it. On the other side: If there is a part of the document where one don't need pageanchors, disabling them is also adequate.

0

I had this warning because I put \tableofcontents before abstract at the beginning of my document. It disappeared when I swapped them. This reversed order also makes more sense I guess.

I see it is not the case in your case but maybe it will help someone else like it would have helped me.

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