Select Document properties... from the 'View' menu or
click the Information (i) button glyphConsole notebook button on the Tool-bar

The Properties page of the Notebook shows the type of document – PCL, PDF etc. – and the file's size and update date. For some formats such as PDF or TIFF it will include information such as document creator (if present). It also includes the count of graphics, text strings and drawn paths on the current page. When a file is opened from the command-line, the options, file and path entered are also shown.