SpaceSnifferSpaceSniffer on Windows 11
Use this workflow on an authorized Windows 10 or Windows 11 computer. SpaceSniffer shows a size-proportional view of storage; always inspect the source file in Windows before changing or deleting it.
Step-by-step workflow
- Extract the x64 archive.
- launch the tool.
- approve elevation only if a protected directory needs scanning.
- select C: or another volume..
How to verify the result
The C: treemap displays size-proportional rectangles for folders and files.
Why this matters
SpaceSniffer is a visualization tool, not a diagnosis of file necessity. The important outcome is an identifiable path and measurable file size, checked against the same Windows volume and with permission to inspect it. If the scan is incomplete, report that limitation instead of treating missing paths as zero bytes.
More targeted troubleshooting
If the result differs from what File Explorer reports, clear the filter field, allow scanning to finish and check the permissions of the specific directory. Repeat on a smaller known folder when you need to isolate a scanning limitation. Always distinguish a changed treemap view from an actual change in free space.
Frequently asked questions
What is the first step for spacesniffer on windows 11?
Extract the x64 archive.
How do I check the result?
The C: treemap displays size-proportional rectangles for folders and files.
What should I avoid?
Windows storage settings and File Explorer may show different totals due to protected files and metadata.
Related Windows topics
- Verify a SpaceSniffer ZIP Download
- SpaceSniffer on Windows 10
- Find Large Windows Update Folders
- Check Windows.old Folder Size
Sources and further reading
Get the portable Windows application
Confirm the version, compatible architecture, package hash and provenance before executing a downloaded archive.