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Duplicate File Checker

Find files with identical content by SHA-256 hash.

How to use

  1. Drop in the files you suspect contain duplicates.
  2. Click find - each file is hashed on your device.
  3. Review the duplicate sets grouped by identical content.

Frequently asked questions

How are duplicates detected?

By SHA-256 hash of the full content - byte-identical files match even when names and dates differ. Different edits of a photo won't match.

Can two different files share a hash?

The odds of a SHA-256 collision are astronomically small - matching hashes means matching content in practice.

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