Mac storage basics · Creative and media apps
How do I find and delete screenshots stored in my Photos library?
Short answer: In Photos, open Media Types → Screenshots (and Screen Recordings) in the sidebar, select and delete. Then empty Recently Deleted to get the space back.
Screenshots from your iPhone or iPad (and any you've imported) collect in Photos. Open Photos and look under Media Types in the sidebar for Screenshots and Screen Recordings — every one is grouped there.
Select the ones you don't need (Command-click, or Command-A for all) and press Delete. They move to Recently Deleted, where they still use space until it's emptied or they expire — see emptying Recently Deleted. With iCloud Photos on, deleting removes them from your other devices too.