How do I export all pages of a space?

Prior to XWiki 6.3, the only solution was to use an extension to do this. Starting with XWiki 6.3 it's possible to manually craft an export URL that can export a whole space. See the XAR Export feature for details on how to do this. However there's still currently no default UI allowing to export all pages of a space.

There are several Export extensions that allow to export a space, with some UI. For example, the Large Export by Space Application should do the job.