What is filling your disk?
Pick a folder and see it as a 3D city: every building is a file or folder, and the taller it is, the more space it takes. It all runs in your browser. Nothing is uploaded.
Pick a folder to analyse
or drop a folder here
Nothing is uploaded. The folder is read-only and only in this tab.
Scanning…
Drag to rotate, scroll to zoom, click a building for details. Double-click a folder to enter.
More storage tools
Converter
Convert between decimal (1000) and binary (1024) units and see why your disk seems to lose space.
Transfer time
Enter the size and pick the link. We show the time at the theoretical speed and at a realistic estimate.
How much fits
Pick a capacity and see what fits in photos, songs and hours of video. The average sizes are editable.
Cleanup guide
Commands for Windows, macOS and Linux, from safest to riskiest. Each says what it does and whether it deletes anything.
How it works
- Pick a folder (or drop it on the scene). In Chrome, Edge and Brave the browser reads it directly, read-only.
- See the city: each folder is a district and each file a building. Area and height show size. Colour shows type: video, images, audio, documents, archives, code, installers.
- Hunt the waste: biggest files, heavy folders, duplicates (by content, SHA-256, computed on your computer), files you have not opened in years and folders such as node_modules or caches that get recreated.
- You clean up: disk.pt never deletes anything. It shows you the path and you decide. The cleanup guide has safe commands for Windows, macOS and Linux.
Frequently asked questions
Are my files uploaded to a server?
No. The analysis runs in your browser and the code sends no files, names or sizes anywhere. You can confirm in the Network tab of your developer tools.
Does disk.pt delete files?
Never. It only asks for read access. It shows you what takes space and you decide what to delete, with your file manager or the commands in the cleanup guide.
Which browsers work?
Direct folder reading works in Chrome, Edge, Brave and Opera (Chromium browsers). Firefox and Safari use the drop or pick-a-folder method, which also works but is slower. The 3D view needs WebGL; without it we show a 2D map.
How are duplicates found?
First we group by size, then compare the start, and finally the SHA-256 fingerprint of the content, all on your computer. Files over 128 MB are compared by samples and are marked as likely.
Can I scan a whole drive?
You can, but browsers block some system folders (such as a drive root) and tab memory is limited. Start with folders such as your home, Documents or Downloads.
Why does 1 TB show 931 GB?
Manufacturers count 1 TB as 10¹² bytes. Windows divides by 1024³ and calls GiB "GB": 10¹² bytes are 931 GiB. No space is missing; it is a matter of units.