There may be times when you don't need the reviewer to give you any feedback, you just want to show them your work, like a brand guidelines document for example. Send them a read-only link that shows them a clean version of your board, with no distracting UI.
- Go to the 'Share' icon at the top right of the board
- Click on 'Private Link' on the left
- Copy and paste the link into an email or Slack etc.