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File fingerprint

A hash is a short fingerprint of a file's exact contents. If even one byte changes, the fingerprint changes, which makes it a simple way to prove a document is untouched.

Works in your browserNo file upload needed

Drop your files here

or choose from your device

How to check a file's hash

  1. 1Choose one or more files.
  2. 2Press Generate fingerprints.
  3. 3Copy the hashes, or compare them with a value you were given.

Features

  • SHA-256, SHA-1 and MD5.
  • Works with any file type.
  • Computed on your device.

When to use File fingerprint

  • Record the fingerprint of a signed contract or evidence file.
  • Check a download against the checksum its publisher lists.

Good to know

  • Your files are processed in your browser and never uploaded to a server.
  • Free to use with no sign-up, no limit on tasks and no watermark on your files.