Hi Eve 

Thank you for posting in the Community! My apologies for the confusion there is not an image manager within Lucidspark.

If you are trying to clear space within your Lucid account the best way is to delete any boards that you no longer need. Please Note: Items will remain in your trash for 7 days and after those 7 days will free up your storage.

You can check how much of your storage is being used and what it is being used by in the bottom left corner of your Account Settings. If you hover over each of the colored sections you can see what that portion of the storage represents.

Please let me know if you have any other questions!