Replace superfluous whitespace with full stops

This feature would be a huge help with renaming torrent files and folders.

Example -

Series Name S01E01 Episode Name
Series.Name.S01E01.Episode.Name

You can use "Batch Rename" WinSCP extension:
https://winscp.net/eng/docs/library_example_advanced_rename#powershell

Or you can use this custom command:
mv "!" `echo "!" | sed -e 's/ /./g'`
https://winscp.net/eng/docs/custom_command