7 Ways to Free Up Disk Space on Mac
macOS slows down when disk space runs out. These 7 proven methods, powered by OptiClear, help you reclaim 10–80 GB quickly without any risk of losing important files.
1–3: Quick wins in under 2 minutes
Empty the Trash, clear browser caches in OptiClear (typically 500 MB–3 GB), and delete system logs. These three steps alone often free 1–5 GB with zero risk.
4–5: Medium wins — large files and duplicates
Use OptiClear's Disk Map to spot folders over 1 GB, then sort Downloads by size. Remove duplicate files with the Duplicate Finder. Combined, this usually yields 5–20 GB.
6–7: Big wins — Xcode and old apps
Xcode's DerivedData and simulator runtimes can exceed 30 GB. Uninstall apps you haven't opened in 6+ months. OptiClear removes app leftovers automatically so no orphan files remain.
Frequently Asked Questions
What takes the most space on a Mac?
Usually: videos/photos, Xcode developer caches, browser data, and app leftovers from uninstalled applications.
How do I check what's using disk space?
Open OptiClear and tap Disk Map for an instant visual breakdown of every folder on your Mac.