Guides
Free up disk space, and know what you’re removing
Each guide explains what is actually using the space, which parts are safe to remove, and how to do it with the tools already on your computer.
Mac
Why is System Data so big on my Mac?What macOS counts as System Data, the usual suspects behind 50 to 200 GB of it, and how to shrink it safely without wiping things you need.Read the guide How to delete Time Machine local snapshots on a MacLocal snapshots can hold tens of gigabytes. How to list them, when macOS removes them on its own, and how to delete them yourself with tmutil.Read the guide How to free up space from Xcode: DerivedData, simulators and device supportXcode quietly fills 30 to 100 GB with build files, old simulators and device support. What each folder is and which ones are safe to delete.Read the guide Mac storage full? What to delete first (and what to leave alone)A safe order for freeing space on a full Mac: the big wins first, the things that come back on their own, and the folders you should never touch.Read the guide How to find large files and folders on a MacFour ways to find what takes up space on a Mac: Storage settings, Finder search, Terminal commands and a disk map, with what each one misses.Read the guide Free DaisyDisk alternatives for Mac, comparedGrandPerspective, OmniDiskSweeper, Disk Inventory X and freedisk.space compared with DaisyDisk: views, APFS clone handling, cleanup safety and price.Read the guide Free CleanMyMac alternatives that show you what they removeWhat Mac cleaner apps actually delete, why one-click cleaning is risky, and free alternatives that let you review every file before it goes.Read the guide Docker.raw is taking up too much space on my MacWhy Docker Desktop’s disk image grows to 60 GB or more, how to see what is inside it, and the commands that actually give the space back.Read the guide How to clear cache on a Mac safelyWhich Mac caches are safe to clear, which ones come straight back, and why deleting all of ~/Library/Caches at once is rarely worth it.Read the guide How to find duplicate files on a Mac (and why some aren’t taking space)How to find real duplicate files on a Mac, and why APFS clones look like duplicates but use no extra space, so deleting them frees nothing.Read the guide
Mac and Windows
Windows
What’s taking up space on Windows 11? How to find outHow to see what fills your C: drive on Windows 11: Storage settings, hidden system files, the WinSxS folder, hiberfil.sys and a full disk map.Read the guide WinDirStat alternatives for Windows 11WizTree, TreeSize Free, SpaceSniffer and freedisk.space compared with WinDirStat: scan speed, views, cleanup safety and what each one costs.Read the guide