In InDesign, how do I create a bookmark (i.e., a bookmark that will be exported to a PDF file) that is a hyperlink to a URL?
This isn't the easiest thing to find in InDesign. The whole issue of interactive elements and hyperlinks has been in a state of flux through the last couple of versions. The instructions that follow are for CS5 or 5.5, and should hold good for CS4:
Open the Hyperlinks panel: Window > Automation > Hyperlinks
Highlight the text you wish to make your bookmark.
From the panel flyout menu select either "New Hyperlink" if your text is not a URL, or "New Hyperlink from URL" if your text is the URL. (Note: Do not choose "New Hyperlink Destination", which places a named anchor to which an internal hyperlink can refer.)
If you have a number of URLs scattered throughout the document, the flyout menu option "Convert URLs to Hyperlinks" will do them all in one swoop.
You include the Bookmark by going to File>Export and choose PDF(Interactive) and Choose the interactive options.
Or you can choose File>Export PDF (Print) and change to Acrobat 5 compatibility, the Bookmark and Hyperlink is now available to tick.
You create bookmarks by using the Window>Interactive>Bookmarks or you can make a Hyperlink by going to Window>Interactive>Hyperlinks.
Note that most urls written with www. or http or https etc. will automatically be linked in Acrobat.
You can use third party plugins for creating a bookmark in InDesign. BrowsePlus InDesign Plugin is a web browser InDesign which allow you to manage bookmarks,save and edit bookmarks, watch videos, multiple tabs, check email, simply drag & drop images within InDesign. http://metadesignsolutions.com/products/browseplus.php