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◇ On your device

Filename sanitizer

Create a portable, filesystem-safe filename without changing the file itself.

How it works

Enter one filename.
Choose the replacement text and maximum length.
Run the tool and review the sanitized filename before renaming anything.

Related tools

Batch rename planner

Create a deterministic, collision-safe rename plan from a list of filenames without modifying files.

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Bundle selected files in a ZIP archive without uploading them.

File Compatibility Doctor

File Compatibility Doctor. Offline bounded structural analysis only; no runtime execution or external network validation.