Connected duplicate finder
OneDrive Duplicate File Finder
Find exact duplicate files in OneDrive with a read-only metadata scan, then review every copy before cleanup.
A real read-only OneDrive scan
Microsoft handles authorization. ClearCopies requests delegated Files.Read access and compares exact byte size with QuickXorHash or SHA-1 fingerprints returned by OneDrive. File contents are not downloaded during duplicate discovery.
No cleanup happens during the first connection or scan.
Anonymized production benchmark · August 2026
Validated on a six-figure-file OneDrive library
A completed read-only production scan indexed 102,610 files across 584 GB. Exact size-and-fingerprint matching identified 16,718 groups and 22.4 GB of recoverable extra copies. Similar or uncertain files were kept outside that exact total.
- 102,610
- files indexed
- 584 GB
- metadata inventory
- 22.4 GB
- exact recovery estimate
This benchmark exposed the difference between broad possible-match totals and exact recoverable storage, so the product now keeps those classifications visibly separate.
Written by ClearCopies Editorial · Technical review by ClearCopies Engineering
Exact fingerprint groups
Recoverable storage estimate
Copy-by-copy review plan
How it works
A useful answer in three clear steps.
- 1
Connect OneDrive with read-only access
Complete this check before moving to the next decision.
- 2
Scan cloud metadata without downloading file contents
Complete this check before moving to the next decision.
- 3
Review which copy to keep in every exact group
Verify the final result against your current cloud drive or organizational policy.
Frequently asked questions
Before you use this tool
Is the Duplicate File Finder free to use?
The OneDrive metadata scan and duplicate review are free. You can review every group before deciding whether to run a cleanup.
How accurate is the Duplicate File Finder?
ClearCopies requires matching byte size and matching QuickXorHash or SHA-1 values returned by OneDrive for an exact group. Same-name or same-size files alone are not presented as safe removal candidates.
Can this tool delete or change my OneDrive files?
No. The initial Microsoft authorization is read-only. Cleanup requires a separate reviewed plan and explicit write authorization.
What should I do after using the Duplicate File Finder?
Review which copy to keep in every exact group. Connecting starts a real Microsoft authorization flow. Nothing is removed during the first scan.
Keep exploring
Related duplicate cleanup tools
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Dropbox Duplicate Finder
Find exact duplicate files in Dropbox using provider content hashes and a review-first cleanup plan.
Duplicate Savings Calculator
Estimate how much OneDrive space duplicate copies consume and how much one-copy cleanup could recover.
Ready to scan OneDrive with real metadata?
Authorize OneDrive read-only, compare provider fingerprints and review every exact group before any cleanup decision.