Most developers (etc) use "binary data" or "a binary format" as a shorthand for "not even remotely ASCII or Unicode" - as opposed to the opposite, like a .txt f

Most developers (etc) use "binary data" or "a binary format" as a shorthand for "not even remotely ASCII or Unicode" - as opposed to the opposite, like a .txt file or HTML or Markdown, where it's readable and printable to the screen. Of course if it's in a file or in RAM or whatever, it's always ultimately stored as 0s and 1s but that's not the sense we mean here.