Batch Filename Cleanup｜Rename Wizard

1. Drop or Select Files

All processing happens locally in this browser. Only filenames are read; no file contents are uploaded.

Drag & drop files here

Rename Rules

Normalize full-width alphanumerics/symbols to half-width (Unicode NFKC) Replace whitespace with underscores Normalize file extensions to lowercase (.JPG → .jpg) Convert base names to lowercase Collapse repeated separators (__ / -- / ..) into one Trim . _ - at the beginning and end Remove forbidden characters / \ : * ? " < > |

2. Preview

See original vs normalized filenames. This tool does not rename files directly. Use the copied mapping for your own batch scripts.

No files selected yet.

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