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

Back to main site

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
Open tool

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
Open tool

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
Open tool

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
Open tool

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
Open tool

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
Open tool

Preview-first organization

Design a rename pattern, inspect every output, and export the plan before the first rename happens.

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

What this tool does

  • Surfaces naming collisions before a batch rename runs.
  • Exports CSV or PowerShell while the browser session stays non-destructive.
  • Pairs with Dupe Zappa for conflict strategies, history, and apply.

Non-destructive preview

Design the pattern here. Apply it in the desktop app.

The browser page exists to sharpen the naming plan. Conflict handling, undo, and the real apply step stay on the Dupe Zappa side.

Rename setup

Load a folder and tune the pattern live.

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

Prefix
Suffix
Search
Replace
Start index
Padding