File organization tool
File Extension Inventory Analyzer
Summarize a pasted filename inventory by extension and file count.
Processing happens in this browser tab. The pasted data is not submitted to ClearCopies.
Counts by extension
Percentage of inventory
Unknown-format visibility
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 dominant and unexpected extensions
Complete this check before moving to the next decision.
- 3
Use the profile to plan specialized review
Verify the final result against your current cloud drive or organizational policy.
Frequently asked questions
Before you use this tool
Is the Extension Inventory Analyzer 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 Extension Inventory Analyzer?
Use the profile to plan specialized review. Extensions can be missing or misleading and do not verify a file's actual media type.
Keep exploring
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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.
Filename Sanitizer
Create safer filename suggestions by replacing reserved characters and trimming risky endings.
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.