Looking for a way to determine if a title is missing the cover

[ryerman]

Create a new column, using %_covers% for the value.

File List – Mp3tag Documentation

or
Use a filter: %_covers% MISSING

Filter expressions

This topic collects useful Filter expressions If you have a useful filter expression, please post it here and give a short description of what it does. These filter expressions can be used with the Mp3tag filter [F3]. Please look at https://docs.mp3tag.de/filter for the documentation. Notes All filter keywords must be uppercase. All operations are case insensitive, for a workaround see this post.