File operations / Compatibility
Filename Sanitizer
Fix forbidden characters, reserved device names, trailing dots, duplicate names, and Unicode normalization before a cross-platform handoff.
Runs entirely on your deviceNo uploads, accounts, cookies, or personal tracking.
Original and safe names
Blank lines are ignored
1. Add your data
Paste one filename per line, including extensions.
2. Choose the result
Choose a replacement character and normalization form.
3. Save it locally
Review unique cross-platform-safe names and copy the list.
About this tool
Use Filename Sanitizer without an upload
Fix forbidden characters, reserved device names, trailing dots, duplicate names, and Unicode normalization before a cross-platform handoff.
The operation runs in the current browser tab. Tool input is not included in aggregate analytics, and the standalone download makes no analytics requests.