How to get more disk space on Mac without uninstalling applications: transfer large files such as videos, photos, and archives to iCloud, external drives, or other cloud storage. Turn on Optimize Storage to allow macOS to automatically remove already watched media and old attachments. Also, clear your browser caches and system cache files along with temporary data files to release hidden space. Delete duplicate files and compress large folders that you rarely access. Besides, empty the Trash as well as get rid of old downloads. Besides, you can clean Mail attachments and Messages media that typically take up considerable storage without removing installed applications.