JAM Software’s TreeSize app is a handy Windows utility to quickly visualise which of your files or folders are taking up large amounts of your disk in various ways.
![Screenshot of TreeSize Free](https://cdn.uploads.micro.blog/69139/2024/tsf.png)
There’s paid versions that have extra fancy options - automation, duplicate finder, breakdowns and so on. But if you just want to know where all your space has gone, the free one works fine. It’s available in a portable edition too.