Identify text-free PDFs for batch OCR?

[Leo]

I'm not sure it's possible. There was some discussion earlier in the year:

Determine if PDF is searchable?

Hi, Is Directory Opus able to set a marker so that the user is able to distinguish searchable / non searchable PDF files from each other? For example, by creating a column "searchable" and put an S (or any marker) on each line for searchable PDF fi…