Nature.com is now adding XMP packets into its PDFs. XMP is Adobe's Extensible Metadata Platform - a framework for embedding metadata into arbitrary binary files. Basically, these are simple XML documents (conforming to a profile of RDF/XML) which carry metadata about the work published in the PDF.


A number of tools exist to extract XMP packets. One such easy-to-use, cross-platform tool is ExifTool:


ExifTool is a platform-independent Perl library plus a command-line application and is available both as a standalone Windows executable (no Perl required) and a Macintosh OS X package.

Further information

A simple introduction to metadata and to XMP is available at:


General information on XMP can be found at the Adobe product page:


Please address any specific queries about use of the nature.com XMP interface to interfaces@nature.com.