How to View Storage Usage by File Type on Windows 11

Quick fix: Open Settings → System → Storage. Pick drive (C:). Shows usage breakdown by category: Apps, Documents, Pictures, Videos, Music, etc. Click each for detail. For more granular: install WizTree (free) or WinDirStat (free) — visualizes folders by size, ranks by type.

Windows Settings shows storage breakdown by category. For folder-level visualization with file type breakdown: third-party tools like WizTree (faster) or WinDirStat (classic visual).

What causes this need

To free disk space: identify what’s using it. Built-in tools give general category breakdown. Third-party tools give file-type-specific analysis: “5GB of MP4, 3GB of PDF, 8GB of ISO,” etc.

Method 1: Settings Storage breakdown

The standard route.

1. Open Settings → System → Storage.
2. Pick drive (usually C:).
3. Categories with usage shown:
   • Apps & features: installed apps.
   • Temporary files: cache.
   • Pictures, Videos, Music: media.
   • Other: everything else.
   • System & reserved: Windows files.
4. Click each for detail.
5. For chronic management: enable Storage Sense (auto-cleanup).
6. For specific folders not shown: see Other category → click to see file types.

This is the built-in route.

Method 2: WizTree for folder-level breakdown

For detailed analysis.

1. Download WizTree (free, by Antibody Software) from diskanalyzer.com.
2. Install or run portable.
3. Pick drive to analyze.
4. Click Scan. WizTree reads NTFS MFT directly — fast (seconds).
5. Results show folder tree sorted by size. Largest folders at top.
6. Click File View tab. Sort by Size descending.
7. For type breakdown: Tools → File Type Analysis.
8. Shows: file extension, count, total size.
9. Sort: .iso 50GB, .mp4 30GB, .docx 5GB, etc.
10. For specific type to delete: filter by extension → review → delete.

This is the WizTree route.

Method 3: WinDirStat for visual map

For visual exploration.

1. Download WinDirStat (free) from windirstat.net.
2. Install. Run.
3. Pick drive. Scan starts.
4. Slower than WizTree (scans full file system).
5. Results: 3-pane view.
   • Tree view: folders.
   • File type breakdown: list with color-coded blocks.
   • Visual treemap: rectangles per file, sized by file size, colored by type.
6. Click big rectangle: navigates to file in tree.
7. Right-click: open file, delete, etc.
8. For visual learners: WinDirStat’s treemap is intuitive.
9. For chronic disk cleanup: routine WinDirStat scan helps identify creep.

This is the visual route.

How to verify the fix worked

• Settings → Storage shows category breakdown.
• WizTree / WinDirStat shows file type usage.
• Identifiable top storage consumers.
• Can take action to clean.

If none of these work

If categories don’t show details: Specific app sizes not shown: Settings → Apps → Installed apps → sort by Size. For hidden / system files: WizTree shows. For BitLocker drives: scans work but slower. For network drives: scans run, but slow over network. For OneDrive cloud-only files: zero local size; cloud size only visible in OneDrive web. For specific large file: use file search by size. File Explorer → This PC → search bar → size:>1GB.

Bottom line: Settings → System → Storage for category breakdown. WizTree for fast file-type-by-size analysis. WinDirStat for visual treemap. Identify and delete large unused files / archives.