Mac storage basics · Finding big files, Downloads and the Trash
How do I find all videos (or disk images, or archives) on my Mac?
Short answer: In Finder press Command-F, choose This Mac and set Kind (Movie, Image, Archive), or search a file extension by name. Sort the results by Size.
In Finder press Command-F, choose This Mac, and set the first criterion to Kind — for example Movie, Image or Archive. For a specific extension, type it in the search field (for example .dmg) and choose to match the name.
Switch to List view and sort by Size to see the biggest results first. Searches only cover places Spotlight indexes.