--- title: "Space Wizard — Disk Space Analyzer" description: "Measures a drive folder by folder to show where the space went, then clears the duplicates. Local disks or any host over SFTP, FTPS or FTP. No account." url: "https://royalsoftworks.com/products/space-wizard/" source: "https://royalsoftworks.com" format: "markdown" note: "Markdown rendering of the HTML page at `url`. Same content, same canonical URL." --- Disk analytics · local & remote # See where the space went. On this machine, or that server. Space Wizard measures a drive folder by folder and shows you the one that quietly ate 80 GB. Point it at a local disk, or at any host you can reach over SFTP, FTPS or FTP — and clear the duplicates it finds while you're there. [Get it free](https://royalsoftworks.com/download/) See the breakdown Windows · macOS · Linux — free tier scans up to 100 GB per pass C:\\ · 429 GB measured bar donut Users 142 GB ProgramData 84 GB biggest Windows 56 GB Program Files 38 GB pagefile.sys 12 GB Other 97 GB ▸ open a folder and the chart follows you down 01 Usage breakdown ## Bars or a donut. Whichever you read faster. Every folder is drawn at the size it actually occupies — subfolders included — so the worst offender is simply the biggest thing on screen. Open it and the chart follows you down a level. Same scan, two ways to read it. ### Measured, not estimated Folder totals are the sum of every file underneath, streamed in as the walk progresses — you can start reading the answer before the scan finishes. ### Honest about what it can't see Folders Windows refuses to open are counted and reported, with a one-click restart as Administrator — no silently smaller number. ### Cloud folders skipped by default OneDrive, Dropbox, iCloud, Google Drive, Box, pCloud and MEGA are excluded automatically: their placeholders aren't real local bytes, and scanning them can pull the files down for real. 02 Remote hosts ## The full-disk server, without the SSH session. Save a connection once and a remote filesystem behaves exactly like a local drive: mounts listed, folders measured, duplicates found, files deleted. On a host with a shell, one `find` pass streams the whole tree back in a single round trip. - SFTP, FTPS or plain FTP — or let it dial each one and keep whichever answers - Password, private key or SSH agent authentication - Duplicate hashing runs on the remote host: kilobytes of output cross the wire, not gigabytes of file - 1–16 parallel connections per host, so a slow link is a setting rather than a wall For your IT team - **Fast path** — GNU find -printf streams type/size/path for the whole tree in one command; falls back to a concurrent directory walk on any SFTP or FTP server - **Mounts** — df -Pk enumerates real filesystems; pseudo mounts (tmpfs, proc, snap…) are filtered out - **Remote hashing** — dd + sha1sum for the 4 KB prefix pass, sha1sum for the full pass; falls back to streaming 4 KB per candidate when the account has no shell - **No SFTP subsystem?** — Listing falls back to find -maxdepth 1, so browsing keeps working on locked-down accounts backup-01 · root@10.0.4.12 SFTP / (root) 412 GB · 96% full /var 188 GB /home 121 GB /srv/backup 63 GB · 14 GB duplicated SFTPover SSH FTPSFTP over TLS FTPplain — flagged in the UI Explore Space Wizard ## Where the space went, and how to get it back. The usage breakdown, the remote-host engine, the duplicate check, and the technical reference — in one place. [Features ### Everything it does Usage breakdown, remote scanning, duplicate detection, filtering, safe deletion. View](https://royalsoftworks.com/products/space-wizard/features/) [Use cases ### Who reaches for it Full servers at 2am, laptops out of room, dev boxes, hosting fleets, pre-migration triage. View](https://royalsoftworks.com/products/space-wizard/use-cases/) [How it works ### The scan, end to end How a walk runs locally and remotely, how duplicates are confirmed, what gets skipped. View](https://royalsoftworks.com/products/space-wizard/how-it-works/) [Security ### Before you point it at prod Host-key verification, keyring-backed credentials, transport choice, delete safety. View](https://royalsoftworks.com/products/space-wizard/security/) [Whitepaper ### Technical reference Scan architecture, the three-pass hash, remote transports, licence gating, data handling. View](https://royalsoftworks.com/products/space-wizard/whitepaper/) [FAQ ### Common questions Remote hosts, free-tier limits, cloud-folder exclusions, deletion safety. View](https://royalsoftworks.com/products/space-wizard/faq/) 06 Free and Pro ## Free is a real tool, not a demo. The free tier scans your home drive with everything switched on — usage breakdown, duplicate detection, remote hosts — up to 100 GB per pass. Pro removes the cap and opens every other drive on the machine. Two tiers, no feature maze. ### Free Your own drive - Usage breakdown, bar and donut - Duplicate detection with safe deletion - Remote hosts over SFTP, FTPS and FTP - Home drive · up to 100 GB per scan ### Pro One key, one machine Every drive, no cap - Everything in Free - Every local drive — externals, second disks, mapped volumes - No scan-size limit - Online activation or an offline licence file for air-gapped machines ### Find out what is really on your drive. Space Wizard 1.0 is in free open beta for Windows, macOS and Linux. [Download](https://royalsoftworks.com/download/) [See pricing](https://royalsoftworks.com/pricing/)