Duplicate File Finder
Find duplicate files by comparing content. Clean up storage space.
Files with identical size are hashed first; identical content = duplicate. Files never leave your device.
About Duplicate File Finder
Find duplicate files by comparing content. Clean up storage space.
Duplicate File Finder cleans up and restructures data without spreadsheet gymnastics — paste your data, choose the format, and copy or download the result.
How to Use Duplicate File Finder
- Paste or import your data into the input area.
- Choose the format or transformation you need.
- Check the live preview of the output.
- Copy the result or download it as a file.
Key Features
- Works with CSV, TSV, JSON and other common data formats.
- Live preview so you always know what you will get.
- Handles large datasets without slowing down.
Frequently Asked Questions
How much data can Duplicate File Finder handle?
Duplicate File Finder is designed for practical datasets — spreadsheets, exports and logs of typical size process instantly in your browser.
Is Duplicate File Finder free to use?
Yes. Duplicate File Finder is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Duplicate File Finder runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Duplicate File Finder work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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