Free browser-side cleanup tools

Preview the pain locally. Use DupeZappa for the risky part.

Everything in this tools hub runs in the browser against folders you pick. No upload. No hidden apply step. Just local analysis, previews, and a clear next step in the desktop app when the job turns risky.

Tool index

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Duplicate cleanup

Duplicate Folder Scanner Lite

Exact-match groups, image-similarity hints, and recoverable-byte totals. Local browser scan with no upload.

Local browser scanExact + similarRecoverable bytes
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Decision support

Smart Duplicate Keeper Assistant

Apply keep-newest, keep-oldest, keep-largest, keep-highest-resolution, or keep-shortest-path logic to duplicate groups before you commit.

Keep rulesReasoningSafer reviews
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Preview-first organization

Batch Rename Previewer

Preview prefix, suffix, replace, numbering, lowercase, and slug-style transforms without mutating your files. Export CSV or PowerShell when you like the pattern.

Live previewConflict hintsCSV + PowerShell
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Fast folder triage

Empty / 0-Byte / Junk File Finder

Classify common cleanup clutter locally in the browser so you can see what is safe to remove.

Zero-byte filesEmpty foldersTemp clutter
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Disk triage

Folder Size Scanner Lite

Pick a local folder and see which immediate child directories consume the most space. Browser walk, not NTFS MFT, but fast enough for hotspot triage.

Top folders by sizeLocal browser scanNo upload
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Photo privacy utility

Photo Metadata Privacy Checker

Scan local photos for common EXIF privacy leaks and download stripped copies client-side when the browser can safely re-export them.

EXIF warningsGPS flagsClient-side strip
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Decision support

Pick which duplicate to keep using keeper rules you would use on a real drive.

Apply keep-newest, keep-oldest, keep-largest, keep-highest-resolution, or keep-shortest-path logic to duplicate groups before you commit.

Keep rulesReasoningSafer reviews

What this tool does

  • Turns large duplicate groups into a keep/remove recommendation per file.
  • Shows which rule picked the keeper and why.
  • Exports the plan into DupeZappa preview, move, and delete flows.

Local scope

No upload. No hidden apply step.

Pick a folder and let the browser worker inspect the files you expose. The results stay local and the delete or move decision stays inside DupeZappa.

Keeper recommendation

Run the scan and choose the keep rule.

Keep rule

Your browser is using directory upload fallback. The scan is still local, but empty folders cannot be detected.