Free browser-side tools

Inspect folders in your browser before changing anything on disk.

These tools run locally in your browser on folders you select. Nothing is uploaded or modified. When you want to delete duplicates, batch-rename files, or clean up clutter on your drive, use the desktop app.

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, and slug transforms without modifying files. Export CSV or PowerShell when you are satisfied with 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 Dupe Zappa 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 Dupe Zappa.

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.