File organization tool
OneDrive Filename Sanitizer
Create safer filename suggestions by replacing reserved characters and trimming risky endings.
Processing happens in this browser tab. The pasted data is not submitted to ClearCopies.
Safe-name suggestions
Original-to-result comparison
No automatic rename
How it works
A useful answer in three clear steps.
- 1
Paste one filename per line
Complete this check before moving to the next decision.
- 2
Review the replacement character
Complete this check before moving to the next decision.
- 3
Apply approved names in the source system
Verify the final result against your current cloud drive or organizational policy.
Frequently asked questions
Before you use this tool
Is the Filename Sanitizer free to use?
Yes. You can use this tool in the browser without creating an account or installing software.
Does ClearCopies upload the data I paste?
No. This utility processes the pasted text in your current browser tab. Avoid pasting secrets, access tokens or unredacted exports into any online tool.
Can this tool delete or change my cloud-drive files?
No. This page does not connect to your cloud account and cannot rename, move or delete files. It produces an estimate, analysis or checklist for you to review.
What should I do after using the Filename Sanitizer?
Apply approved names in the source system. Suggested names can still collide with existing files; check each destination folder before batch renaming.
Keep exploring
Related file organization tools
Filename Validator
Check filenames locally for reserved characters, trailing spaces and other common OneDrive sync risks.
Path Length Checker
Measure pasted OneDrive paths and flag entries that exceed a conservative length threshold.
Duplicate Name Resolver
Generate deterministic numbered names for repeated filenames without overwriting the original list.
Ready to measure duplicate storage with real data?
Choose OneDrive or Dropbox for a read-only scan, then review exact fingerprint matches before any cleanup decision.