At present, pressing space should expand or collapse notebooks.

Note that the LeftArrow/RightArrow shortcuts do seem to be standard[1], so it would make sense for Joplin to add them.

Update: This pull request should add LeftArrow/RightArrow as collapse/expand shortcuts in the notebook list.


  1. See the keyboard shortcuts list in the ARIA Authoring Guidelines page: Tree View Pattern | APG | WAI | W3C ↩︎

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