Changelog

First Windows release. See exactly what's eating your disk, as an interactive sunburst you can drill into.

The engine

• Interactive sunburst chart: a recursive radial map up to six rings deep, each slice sized by its real share of its parent and coloured by its top-level branch, so colours stay put as you drill. Hover any slice to light up its whole lineage and read a name / size / percent tooltip.
• Scan any drive or folder: pick a drive from the launcher cards (each with a used-versus-free meter), Open Folder… (Ctrl+O), Scan your user folder (Ctrl+Shift+H), or drop a folder onto the window. Scanning runs in the background with a live item count and can be cancelled at any time.
• Size on disk and logical size: Windows charges you for whole clusters, and NTFS compression and sparse files make the two numbers diverge badly. Diskr reports both and switches between them instantly, without rescanning. A 1-byte file really does cost a full cluster, and now you can see it.
• Junctions and symlinks are shown, never followed: C:\Users\All Users points at C:\ProgramData, and a scanner that follows it counts ProgramData twice; C:\Documents and Settings points at C:\Users, which is an infinite loop. Diskr draws every reparse point so you know it's there, and counts it as zero.
• Hardlinks counted once: WinSxS, pnpm stores and Docker layers share the same clusters under many names. Diskr charges those bytes to the first name it sees and tells you how much double-counting it avoided.
• Folders it couldn't read are reported, not hidden: a scan never aborts on an access-denied folder. A banner says how many were skipped, explains the usual causes, and offers Restart as administrator if you want them counted. That is the only time Diskr ever asks for administrator rights, and only ever because you clicked it.

Navigation & inspection

• Drill down and back out: double-click a slice or press Enter to recentre the chart on that folder, click the centre disk (or Backspace) to go up, and use the breadcrumb to jump anywhere.
• A sidebar that is a real table: the current folder's contents with name, size and share, sortable and expandable, always agreeing with the chart. It is the chart's keyboard and screen-reader equivalent, not a second copy of the data.
• File actions: Open, Open with, Reveal in File Explorer, Copy path, and Move to Recycle Bin.
• Volume capacity at a glance: used versus free on the scanned drive, alongside the totals for what you're looking at.

Safety

• Deleting always goes to the Recycle Bin after a confirmation, every parent size updates live, and the colours of the surviving branches don't shuffle.
• It will not delete Windows: Diskr refuses to bin drive roots, the Windows folder, Program Files, ProgramData, your profile and its standard folders, AppData, and its own install directory, and it says which one you hit and why. Anything inside those is fair game, because clearing a cache folder is the whole point.
• No hard deletes, ever: Shift+Delete is intercepted and routed to the same Recycle Bin confirmation, because muscle memory shouldn't cost you a folder. When an item is too large for the Recycle Bin, Windows warns you itself instead of quietly destroying it.

Windows fit & finish

• Per-user install into %LOCALAPPDATA%\Programs\Diskr: no UAC prompt, no admin rights, except the one user-initiated Restart as administrator button described above.
• Self-update in place. Diskr downloads the new installer, verifies its Authenticode signature and that its version matches what was advertised, installs over itself and reopens. Any check that fails deletes the download and sends you to the download page instead.
• Segoe UI Variable throughout, and the title bar follows the app's light/dark setting.

Language & accessibility

• 13 languages, detected from your Windows display-language settings, including every Recycle Bin refusal and result, which is exactly where you least want to be reading a language you don't speak.
• Light, Dark or follow Windows, title bar included.
• Accessible throughout: every control reachable by keyboard with a visible focus ring, the chart navigable with the arrow keys and announced as you move, live regions that stay quiet unless something happened, reduced-motion support, and no sideways scrolling at any window size. WCAG 2.1 AA.
• Private by design: 100% local. No account, no usage analytics, nothing leaves your PC.

How Windows differs from Diskr on macOS

• Two sizes instead of one. The macOS version reports allocated bytes; on Windows, cluster slack, NTFS compression and sparse files make "size on disk" and "logical size" genuinely different answers, so Diskr shows both and lets you pick which one the chart is drawn from.
• More kinds of links to sidestep. macOS has symlinks; Windows adds junctions and volume mount points, and the ones Windows ships by default point at folders you are already scanning. All of them are drawn and none are followed.
• No Quick Look. Preview opens the file with whatever handler Windows has registered for it, and Open with lets you choose. Diskr never launches an executable for you: .exe, .msi, .bat and friends are revealed in File Explorer instead.
• No Full Disk Access prompt. Windows has no equivalent, so unreadable folders are surfaced as a count you can act on rather than a permission you have to grant up front.
• Recycle Bin, not Trash, including its rules: an item too big for the bin raises Windows' own warning, and a path too long for the shell's delete API is refused with an explanation rather than removed some other way.