If Windows 10's storage sensor has activated because of lack of space, and you're not exactly sure what's eating your SSD, the operating system could provide more precise information, but it's faster and less problematic to leave that task to an external tool. It's been many years since its last stable build, but the classic WinDirStat still works perfectly, and its visual help is ideal for reclaiming gigabytes in very little time.
In the past, 20 gigabytes were enough for a clean Windows 10 installation. Today, I dare say the average user needs between 40 and 60 GB to stay comfortable. Hotfixes and general updates are getting bigger and bigger, and you also have to consider other factors like restore points and the hibernation file. A good shortcut is to install Windows 10 in compact mode, but not many users want to go down that path.
So... discipline. Sooner or later you'll need to know exactly how much space programs take up on your PC, with a level of precision the operating system (whether Windows 10 or an earlier version) can't give. Despite its relative age, the best program to generate that report is WinDirStat. The installer download doesn't exceed 650 kilobytes, and once installed, it stays under 750 KB.
How to Check How Much Space Programs Take Up on Your PC with WinDirStat
WinDirStat is so easy to use that it doesn't need a tutorial: Choose the drive to analyze, press OK, and wait. Within seconds you'll see a map of all the files on the disk, and each extension is identified with its own color. A block equals a file, and the bigger it is on the map, the more space it occupies. This is especially useful for detecting system files (swap, hibernation, etc.), forgotten videos, and installed programs you no longer use frequently.
WinDirStat's advanced options focus mainly on the appearance of the blocks, but usually you don't need to change anything. And of course, WinDirStat isn't the only one that can present this data. I'm sure our readers will recommend alternatives like TreeSize and WizTree, but if the original works so well, why reinvent the wheel?
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