How to free up disk space on a Mac, safely
The complete, non-destructive playbook: measure first, understand each number, and reclaim space from caches and build output without touching anything you can't get back. The one guide to start with.
The StorageSage blog
Storage, explained so you can check it.
Where your Mac's disk space actually goes, what is safe to delete, and which bits of cleaning advice are myths. Every claim here points at a path you can inspect or a command you can run yourself.
A label on everything: how StorageSage's cleanup rules work
Most Mac tools either just show you sizes or decide for you. StorageSage labels every known cache by risk and by confidence, so you decide with the facts. Exactly how it works, and an honest comparison with DaisyDisk, CleanMyMac, kondo and the rest.
Are Mac cleaner apps a scam? An honest answer
The genuine ones are not malware, but the category oversells itself and the real scams impersonate it. How to tell a legitimate tool from a scareware pop-up, from the people who make one.
The disk that won't empty: APFS snapshots and Time Machine
You deleted 40 GB and nothing came back. Local Time Machine snapshots are the usual reason. Here is how APFS snapshots hold on to space, and how to see and reclaim it.
Clearing video editing caches without losing work
Final Cut, Premiere, After Effects and DaVinci Resolve all generate huge cache and render files. Which ones rebuild for free, and which one folder you must never touch.
Does clearing cache speed up your Mac?
Short answer: almost never, and sometimes it makes things briefly slower. What caches are actually for, and when clearing one is genuinely worth it.
The node_modules problem, and how much you can actually delete
Why JavaScript projects swallow tens of gigabytes, how package manager caches differ from the folders in your projects, and a safe way to reclaim it across every repo at once.
Why Docker Desktop eats your Mac's disk, and how to get it back
Docker on a Mac runs in a virtual machine whose disk image only ever grows. Here is what is inside it, why docker system df and Finder disagree, and how to reclaim space the right way.
Reclaim tens of gigabytes from Xcode
DerivedData, old simulators, device support files, archives and unused iOS runtimes. What each one is, what it costs to rebuild, and the exact commands to clear them.
Nine Mac cleaning myths that waste your time
Freeing RAM, repairing permissions, clearing caches for speed, "you need a cleaner to maintain macOS". What is true, what is obsolete, and what the evidence actually says.
What is "System Data" on a Mac, and why is it so big?
The mystery category in Settings › Storage. What macOS files into it, why it grows to 50 GB or more, and which parts of it you can safely shrink.
Where did my Mac storage go?
A methodical way to find what is actually filling your disk, why the numbers never seem to add up, and how to read a storage map instead of guessing.
See it on your own Mac
StorageSage maps your disk and labels every known cache Safe, Rebuilds or Review, so you can act on these guides without guessing. Everything goes to the Trash first.
Download for macOS