If your ExpressionEngine install is up to date, there is a feature built into File Manager called “usage”. That allows you to mostly see where images are being used. I’m not sure that it will work with every fieldtype though. I think it only works with native file fields.
Here’s a demo of the usage feature: https://www.youtube.com/live/vnEtTUME2b4?feature=shared&t=1025
Packet Tide owns and develops ExpressionEngine. © Packet Tide, All Rights Reserved.