Disk space guides
Practical guides for Mac and Windows: how to find the files eating your storage, what "System Data" and the hidden Windows folders really contain, and how the popular disk analyzers compare, from WizTree and WinDirStat to DaisyDisk and CleanMyMac.
They are written by the developer of LumaDisk, which maps a whole drive as an interactive sunburst, and say plainly where a built-in tool or a free alternative is the better fit.
What's Taking Up Space on My Windows PC?
Identify the real culprits behind a full Windows drive — update files, the hibernation file, app caches, and the system folders Windows doesn't explain.
DaisyDisk Alternative for Windows
DaisyDisk is Mac only. Here is how to get the same interactive sunburst view on Windows, with build-cache and duplicate detection built in.
How to Find Large Files on Windows
Every method for finding large files eating your Windows storage — from File Explorer and PowerShell to visual disk analyzers.
WinDirStat Alternatives for Windows and Mac
WinDirStat alternatives compared: WizTree, TreeSize, SpaceSniffer and LumaDisk on Windows, plus what to use on a Mac, where WinDirStat does not run.