It is possible to search for cards that don't have a description from the global search at the top of your board by using a combination of some special operators: -has:description. The "-" does a negative search to show cards that don't fit the rest of the search criteria.
At this stage there isn't a way to search for cards with empty custom fields.
Hello friends! From the community that brought you Welcome Wednesday, Throwback Thursday and Friday Fun, welcome to Taco Tuesday, a weekly discussion about all things Trello. The best part? One Tac...
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