Dedupe by content, not by name
Every duplicate.
Proven identical.
FolderManifest hashes every file with SHA-256 and groups byte-for-byte duplicates — across folders, drives, and backups. Review each group, delete with one-click undo, and reclaim the space.
Free 7-day trial · No credit card · Windows, macOS & Linux
0
scanned
0
dupe groups
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unique
0.0 MB
reclaimable
Byte-exact
SHA-256 content comparison — filenames can’t fool it
Review first
see every group, path, and size before anything is removed
One-click undo
deleted something by mistake? Bring it back instantly
Everywhere
local, USB, NAS, and mounted cloud drives
Where duplicates hide
Copies multiply quietly.
Imports, edits, backups, and “save as” scatter identical files under different names. Content hashing finds them all — no matter what they're called.
01 / PHOTO LIBRARIES
Same shot, five copies
Imports, edits, and backups leave the same photo scattered across folders with different names. Content hashing collapses them into one group you can dedupe in a click.
02 / BACKUP DRIVES
Backups of backups
Old backup drives accrete copies of copies. Scan several drives at once and keep exactly one instance of every file — verified by checksum.
03 / PROJECT FOLDERS
“report_final_v2_FINAL”
Revisions with mangled names hide true duplicates. Hashing ignores names entirely, so the real copies surface — and the unique edits stay untouched.
How it works
Three steps. No risk.
1
Pick your folders
Select one folder or several — internal disks, external drives, network shares, all in one scan.
2
Scan by content
Multi-threaded scanning hashes files with SHA-256. Size mismatches are skipped early; only true candidates get hashed fully.
3
Review & reclaim
Duplicate groups appear with paths, sizes, and dates. Keep what you want, remove the rest — with one-click undo.
Why content hashing matters
Names lie.
Bytes don't.
Two files called report.pdf can be completely different inside; photo_copy.jpg can be identical to the original. SHA-256 reads the actual content, so you only ever remove files that are provably the same.
hash · group · review · reclaim18 duplicate groups removed
every one checksum-verified identical
12.4 GB reclaimed
one-click undo window — nothing gone forever
Shareable in one click
HTML report — keep it as the receipt
Deleted, not destroyed
Undo is one click.
Always.
Every removal is logged and reversible during the session. The dedupe report lists every group, every path, and every checksum — evidence you can keep.
One license · Everything included
$39 once
The duplicate finder ships inside FolderManifest. No subscription, no upsells.
- Duplicate finder with one-click undo
- Folder compare & integrity monitoring
- Checksum calculator & verifier
- Safe Archive — local, Drive & S3 destinations
- CLI for scripts, schedulers & agents
30-day money-back guarantee · All features unlocked in trial
Questions
Before you dedupe
How does FolderManifest find duplicate files?
Every file is hashed with SHA-256 and grouped by identical content. Names, dates, and locations do not matter — if the checksums match, the files are byte-for-byte identical. If they differ, nothing is flagged.
Is it safe to delete duplicate files?
Yes. Nothing is deleted until you review each duplicate group and choose what to keep. FolderManifest shows sizes, paths, and modification dates first, and every removal is reversible with one-click undo.
How fast is duplicate scanning?
Scanning is multi-threaded and size-first: files that cannot possibly match are skipped before hashing. Typical folders finish in seconds to minutes even with tens of thousands of files.
Does it work on external drives and network locations?
Yes — local disks, USB drives, NAS shares, and cloud storage mounted as drives. Any location Windows can read, FolderManifest can scan.
Can I find duplicates across multiple folders?
Absolutely. Select several folders at once — perfect for comparing backup drives against each other or deduplicating a photo library spread across disks.
Is the duplicate finder included in the trial?
Yes. The seven-day full-access trial includes duplicate finding, folder compare, integrity monitoring, and the CLI. One $39 lifetime license keeps everything.
Related
Related guides & free tools
Try duplicate detection free in your browser, or go deeper on checksum-based deduping.
The space is already yours
Reclaim it today.
Scan your folders, review the groups, and delete duplicates knowing every byte was verified identical.
No credit card · $39 once after · 30-day money-back