[NTG-pdftex] [pdftex-Support Requests][4359] The /Names[..(hypertarget)..] is not visible in PDF 1.5 anymore

pdftex-supportrequests at sarovar.org pdftex-supportrequests at sarovar.org
Thu Jan 10 19:50:40 CET 2013

Support Requests item #4359, was opened at 2013-01-08 08:41
Status: Open
Priority: 3
Submitted By: Vadim Engelson (vengelson)
Assigned to: Nobody (None)
Summary: The /Names[..(hypertarget)..] is not visible in PDF 1.5 anymore 
Category: None
Group: None
Resolution: None

Initial Comment:
The older version of pdflatex 1.40.9 generates an ASCII fragment in
PDF file looking like /Names[...(HYPERTARGET)...]  for each
latex \hypertarget{HYPERTARGET} command in Latex *.tex file
PDF version is 1.4. Using OpenSuse 11.2.

In PDF these are called named-destinations.

These can be visible by unix command "strings xxx.pdf"

The new version of pdflatex 1.40.12 generates this information 
in some encoded from , not in ASCII.  May be it is compressed or encoded
for some reason.
The PDF version 1.5 now. Using OpenSuse 12.2.

Is there any extra argument, parameter or a switch to make
the strings like /Names[...(HYPERTARGET)...] visible as
ASCII strings inside PDF file ?

If not, is there any simple API that works with PDF 1.5 on Unix,
to extract all named-destinations mentioned in the PDF file ?


Comment By: Heiko Oberdiek (oberdiek)
Date: 2013-01-10 19:50

The more recent TeX distributions (TeX Live, MiKTeX) have changed the default settings for the PDF formats:
* PDF version is now PDF-1.5.
* PDF object compression is enabled, a feature of PDF-1.5,
  that compresses objects that are not stream objects.

PDF object compression can be disabled by

The setting for the formats is configured in `pdftexconfig.tex' in TeX Live. After changing the file you need to regenerate the format files.

(Do not mix up \pdfobjcompresslevel with \pdfcompresslevel, the latter configures stream compression.)

Or you can use package `pdf14' (or hyperref option `pdfversion=1.4') right at the beginning of the document (before PDF objects are written):
This is even possible (and recommended) before \documentclass. The package switches back to PDF-1.4
and disables object compression, which not available
in PDF-1.4.


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