Back to home

DISK SCANNER

Visualize disk space usage with a squarified treemap.

SOONDesktop App · Electron · macOS + Windows · Free
TLDR
$▌

COMING SOON

Currently in beta. Downloads will be available here when it ships.

WHAT IT DOES

Disk Scanner gives you a visual map of where your storage is going. Select a drive or folder, and it builds a squarified treemap showing every directory sized proportionally. Bigger blocks mean more space used.

Click any block to drill down. A sidebar lists all contents sorted by size with file counts and percentages. Hover for tooltips. Navigate with breadcrumbs. Mark items for deletion right from the sidebar or context menu, review what you're reclaiming, and move to trash with a confirmation countdown. Everything runs locally on your machine.

HOW TO USE

  1. 01Launch the app — detected drives appear on the home screen
  2. 02Click a drive or pick any folder to scan
  3. 03Watch the real-time scan with file counts and throughput speed
  4. 04Explore the treemap — click blocks to drill down into directories
  5. 05Check the sidebar for top space offenders
  6. 06Mark items for deletion using the trash toggle or right-click menu
  7. 07Review your delete list, confirm with the countdown, and reclaim space
  8. 08Export results to CSV, JSON, TSV, or HTML

FEATURES

  • →Squarified treemap visualization — brightness indicates relative size
  • →Treemap color modes: monochrome (default) or heatmap (green→red gradient)
  • →Scan any drive or folder with real-time progress and throughput display
  • →Drill-down navigation with breadcrumbs and top offenders sidebar
  • →Hovering a top offender highlights the matching treemap block
  • →Dark mode and light mode with instant treemap re-render
  • →Auto-export scan results on completion (CSV, JSON, TSV, HTML)
  • →Scan history — quickly rescan previously scanned paths
  • →Error summary — shows count of inaccessible directories after scan
  • →macOS APFS container-level stats via diskutil for accurate numbers
  • →Worker thread scanning — UI stays responsive during large scans
  • →Stays on the selected filesystem — never crosses into network drives or Time Machine
  • →NAS/network drive scanning — detects SMB, AFP, NFS mounts and mapped network drives
  • →Sparse file detection for Docker VM images and similar
  • →Welcome screen with release notes and macOS APFS disclaimer
  • →Update notifications when a new version is available
  • →Delete list — mark items from the sidebar trash toggle or right-click menu, review reclaimable space, confirm with a 5-second countdown, move to system trash
  • →File type breakdown — per-directory extension summary by size
  • →Sidebar sort — toggle between size, name, or file count
  • →Right-click context menu — open in Finder/Explorer, copy path, add to delete list
  • →Sidebar search/filter — text input to filter offenders by name in the current directory
  • →Scan error feedback — toast notification with error message when a scan fails
  • →Debug logging — opt-in log file via settings for troubleshooting, configurable output path
  • →14 languages — English, Spanish, French, German, Portuguese, Italian, Dutch, Polish, Turkish, Russian, Arabic, Japanese, Korean, Chinese
  • →Custom pixel art title bar on Windows with minimize, maximize, close buttons
  • →Smooth animations — sidebars slide, panels resize, treemap tiles shift in real time
  • →Pixel scanline wipe transition when toggling dark/light mode
  • →Animated scanline title on the home screen (toggleable in settings)
  • →Themed splash screen with pixel art logo and scanline text reveal
  • →Welcome screen as a card overlay with darkened backdrop

EXPORT FORMATS

CSVComma-separated, spreadsheet-ready
TABULAR
JSONFull tree with nested directories
STRUCTURED
TSVTab-separated, paste into any editor
TABULAR
HTMLStyled table, shareable report
VISUAL

INSTALL

macOS

Download the .dmg, drag to Applications. On first launch, right-click and choose Open to bypass Gatekeeper (the app is unsigned).

Windows

Download the portable .zip, extract anywhere, and run DarkPixel Disk Scanner.exe. Windows SmartScreen may warn on first run — click "More info" then "Run anyway" (the app is unsigned).

PRIVACY

  • →Zero data collection — no analytics, no tracking, no accounts
  • →Everything runs locally on your machine
  • →Update checks fetch a single JSON file from darkpixel.io — no telemetry
  • →Optional Report Issue feature sends only your description, app version, platform, and sanitized log snippet (no file paths, no personal data) — you can preview exactly what will be sent before submitting
  • →Reports are anonymous — no IP address, device ID, or account is collected by our code

PLATFORMS

macOS (Intel + Apple Silicon) and Windows (x64). Linux AppImage planned.