Windows 10/11 · One-time purchase

Find every duplicate. Clean up safely.

DoppelScanner scans at near-disk speed, identifies exact copies by SHA256 hash (not just name or size), and lets you review every match before touching anything. Fully offline. No subscription. No telemetry.

See how it works

Requires Windows 10 build 1809+ or Windows 11

DoppelScanner scan results showing duplicate file groups

How it works

Scans smarter
than it hashes

Most duplicate finders hash every file on your drive. DoppelScanner's 4-stage funnel eliminates up to 99% of reads before touching expensive I/O.

01

Walk & collect

All files on disk

Parallel recursive traversal collects every file's path, size, and modification time.

02

Group by size

80–95% eliminated

Files with unique sizes can't have duplicates. Only same-size groups advance.

03

Partial hash (4 KB)

50–80% more eliminated

Hash just the first 4 KB with xxHash. Different headers mean different files.

04

Full SHA256

100% accurate

Full content hash confirms exact byte-for-byte duplicates. No false positives.

Features

Everything you need to clean up storage

Byte-exact matching

SHA256 hashing confirms files are identical down to the last bit. Name, location, and modification date don't matter, only content does.

Media fingerprinting

Finds duplicate photos by EXIF data (camera, timestamp, GPS), audio files by ID3 tags, and video by container metadata, even when files have been renamed or re-exported.

Scheduled scans

Set DoppelScanner to run daily, weekly, or monthly. Results are ready when you need them.

Safe deletion

Files go to the Recycle Bin by default. One-click undo restores everything if you change your mind.

Resume interrupted scans

Cancel mid-scan and pick up where you left off. Hash cache persists across restarts for local and network drives.

Export to CSV and PDF

Export the full results for auditing, ticketing, or handoff to another team.

DoppelScanner scheduled scans configuration screen

Scheduled scans

Set it once.
Come back to results.

Schedule DoppelScanner to run on any combination of days and times. It runs quietly in the background, and your results are ready the moment you open the app. No manual triggering, no forgotten drives.

  • Daily, weekly, or custom day selection
  • Runs silently while you work or sleep
  • Picks up where it left off if interrupted
  • Notifications when results are ready
0network calls
up to 99%I/O reduction
Win 10/11supported

Pricing

One tool. One price.

$24.99one-time

No subscription. No annual renewal. One license for up to 3 Windows PCs.

  • License for up to 3 Windows PCs
  • Byte-exact SHA256 duplicate detection
  • Media fingerprinting (photo, audio, video)
  • Scheduled automatic scans
  • Safe delete with one-click undo
  • Resume interrupted scans
  • Export results to CSV and PDF

FAQ

Common questions

No. DoppelScanner shows you every duplicate group before touching anything. You review the matches, select what to remove, and files go to the Recycle Bin, not permanent deletion. One click in Windows restores everything if you change your mind.

Yes. DoppelScanner scans local drives, external drives, and mapped network paths. Its hash cache persists to disk across restarts, so interrupted scans on large network volumes pick up exactly where they left off.

Windows search finds files by name or extension. DoppelScanner identifies exact byte-for-byte duplicates using SHA-256 hashing, so two files named completely differently in different folders are flagged as duplicates if their content is identical. Name, date, and location are irrelevant.

Your progress is saved. DoppelScanner writes a hash cache to disk as it scans. When you restart, it skips any file already hashed and picks up from where it stopped; useful on drives with hundreds of thousands of files.

Never. DoppelScanner runs entirely offline. Zero network calls during install, scan, or use. No telemetry, no analytics, no cloud sync. Your file paths and content never leave your machine.

Yes. A single $24.99 license covers up to 3 Windows PCs. No per-seat fees, no renewal. Install it wherever you need it.