# See what takes up space in a folder

> A treemap of the folder: tap a folder tile to zoom in, and the biggest files and folders are listed beside it.

Drop a folder to see its size as a treemap, by file type, and in lists of the largest files and folders. Free, and nothing at all is uploaded.

- Tool: [Folder size analyzer](https://fixmint.cc/folder-size-analyzer)
- Category: [Files & archives](https://fixmint.cc/files)
- Fixes: What is eating my disk space?
- Runs in the browser: files and text stay on the device, no sign-up, free.

## How to find what takes up space in a folder

1. Drop the folder to analyse.
2. Tap a folder in the treemap to zoom in. Use the path above it to go back.
3. Read the largest files and folders, or export every file as CSV.

## Questions

### Are these sizes the space on disk?

No. They are the sum of the file sizes, the bytes you would copy. A disk stores files in fixed blocks, so the space used on disk can be a little larger.

### Is my folder uploaded?

No. The folder is read in this tab. Only file names, paths and sizes are used, and nothing leaves your device.

### Why are some folders missing?

A folder appears only when it holds at least one file, because the browser passes on files and not empty folders.

### How many files can it handle?

Tens of thousands. The folder is read in steps so the page keeps responding. The treemap draws the 200 largest items at each level and groups the rest into one tile.

## Related tools

- [Find duplicate files](https://fixmint.cc/find-duplicate-files): Same files saved twice
- [Compare folders](https://fixmint.cc/compare-folders): What is missing from my backup?
- [Clean ZIP file](https://fixmint.cc/clean-zip-file): ZIP full of junk and copies
- [ZIP viewer](https://fixmint.cc/zip-viewer): What is inside this ZIP?