Except for ranges terminated by hyperlinks, simply selecting the range (which you could do for all footnotes by clicking on any footnote, then pressing Ctrl-A), then centring the range before reverting it to its original alignment will remove all leading/trailing spaces. No macros required. For spaces in hyperlinks, you'll need to edit the hyperlink display text and, if the space shouldn't be part of the actual hyperlink, the hyperlink itself. A macro could be used for that.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]