Package issuulinks Boris Veytsman v1.1 PDF visualizer ISSUU (http://issuu.com) is a popular service allowing to show PDF documents ``one page a time''. Due to the way it is implemented, internal links in these documents are not allowed. Instead, they must be converted to external ones in the form http://issuu.com/action/page?page=PAGENUMBER. This package patches hyperref to produce external links in the required form instead of internal links created by \ref, \cite and other commands. Since the package redefines the internals of hyperref, you need to call it AFTER hyperref. The author is grateful to FAO UN which partially funded this work and to Matthieu Stigler, Adam Prakash \& Filippo Gheri for suggesting and testing this package. Changes in v1.1: Added standard warnings about undedined/changed references