What is brand voice?
Also called tone of voice.
Brand voice is the consistent personality in how a business writes and speaks, such as warm and casual or precise and formal, across all its posts and messages.
Why it matters
A recognisable voice makes posts feel like they come from the same business, wherever people see them. Writing it down also lets anyone on the team, or a tool, write in it.
Example
A children's bookshop is playful and uses emoji; a law firm is plain, calm and never uses slang.