Hash

Umbra's Hash tool computes SHA-2, SHA-3, MD5, and SHA-1 digests — the same checksums a file's integrity is usually verified against — of text or a file, entirely offline.

Type or paste text, or drop a file anywhere in the window, and get its digest across every supported algorithm at once, in your choice of case. Weaker algorithms (MD5, SHA-1) are flagged as such, not presented as equally safe.

FAQ

• Why not hash a file with a free online tool?

  That means uploading the file to check its own checksum — the exact exposure hashing is often used to avoid. Umbra hashes locally, files included.

• Which algorithm should I use?

  SHA-2 or SHA-3 for anything security-sensitive; MD5 and SHA-1 are included for compatibility, flagged as weak rather than listed without comment.

• Can it tell me if a file matches a published checksum, not just compute one?

  Yes — paste the expected digest into Verify and Umbra states a match or mismatch against every algorithm you've selected; if you paste a hash-looking value into the main input by mistake, it offers to move it into Verify for you.