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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Storage triage

Storage Autopsy: Windows Folder Health Check

Run a local, read-only browser check for duplicate files, junk candidates, folder hotspots, and file types. Nothing is uploaded or changed.

Local reportNo file uploadPreview before apply
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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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Disk triage

Rank top-level folders by size in the browser before you commit to a full duplicate scan.

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

What this tool does

  • Shows total bytes and file count for the picked folder tree.
  • Ranks immediate child folders so you know where to scan next.
  • Pairs with Dupe Zappa Disk Usage, duplicates, and preview-first cleanup.

Disk triage lite

See which top-level folders eat space before you scan for duplicates.

This browser walk ranks immediate child folders by size. It is not an NTFS MFT scan like WizTree, but it is enough to spot hotspots locally before opening the full app.

Folder size map

Pick a folder and rank top-level children by bytes.

Your browser is using the directory-selection fallback. The scan remains local, but empty folders cannot be detected.

Browser folder walks can be slower than WizTree on huge NTFS volumes. Use this for quick triage, then move into Dupe Zappa for deeper disk maps, duplicates, and cleanup.