How to Clean Mac Storage (2026 Guide)
Running out of disk space on your Mac? Follow this step-by-step workflow to safely reclaim storage without losing important files.
Step 1 — Identify what's eating your storage
Open Apple menu → About This Mac → More Info → Storage Settings to see a breakdown by category. OptiClear's Disk Map shows the same info visually — drill into folders to find the real space hogs.
Step 2 — Empty caches, logs, and DerivedData
Browser caches, Xcode DerivedData, and old simulator runtimes can hold many gigabytes. OptiClear shows you exactly what will be removed, then cleans it in one step.
Step 3 — Remove duplicates and large old files
Use OptiClear's Duplicate Finder for byte-identical copies, then sort Downloads and Movies by size to catch forgotten installers, ZIPs, and recordings.
Frequently Asked Questions
How much storage can I realistically free?
It varies from Mac to Mac. Run OptiClear's free scan to see the exact reclaimable space on yours. Developers usually find the most in Xcode and container caches.
Is it safe to clear caches?
Yes. macOS rebuilds caches automatically. Apps may take a few seconds longer to launch the first time after a cleanup.