Is it executable? Add the appropriate tag. Do we recognize the file extension? If so, add the appropriate tags, stop here. These tags would include binary/text. Peek at the first X bytes of the file.

Microsoft needed a CLI text editor for 64-bit versions of Windows, so it went out and built one. It's not built-in yet, but ...

The exported QR codes from authentication apps can be captured by camera, read from images, or read from text files. The secrets can be exported to JSON or CSV, or printed as QR codes to console.