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Find likely duplicates by name and size.
Private · Browser-based · No account · No upload
Content updated 2026-07-11 · File Utilities
Duplicate File Checker belongs to our File Utilities collection and is built for quick, private, browser-based work.
It is designed for anyone packaging or inspecting files quickly. selected files are read in the browser within memory limits.
When you finish, download or copy the result and close the tab on shared computers. For multi-gigabyte archives, a desktop tool may still be more reliable.
Yes. Duplicate File Checker on AllToolHub is free, requires no account, and is built to run in your browser without a paid plan or watermarks from us.
Processing is designed to happen locally in your browser whenever possible. selected files are read in the browser within memory limits. Standard web hosting may still log technical page requests, not your file contents.
After the first visit, the Progressive Web App cache can keep many pages available offline. Tool scripts must be cached first; heavy libraries load when you open the tool.
You get a consistent, fast UI, private local processing when possible, light/dark mode, and no mandatory sign-up — plus related File Utilities in one place.
Duplicate File Checker is built for anyone packaging or inspecting files quickly. Find likely duplicates by name and size.