What is File Hash Generator?

A file hash generator computes cryptographic digests (MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, SHA3-512, BLAKE2b) for any file. Use it to verify downloads, compare file versions, or check integrity. All processing happens on your device.

Drop a file or switch to Text mode and type a string, then pick any combination of MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, SHA3-512, or BLAKE2b and each digest appears as a hex string. Everything is computed directly on your device, so the bytes never leave the page. Toggle the output between lowercase and uppercase hex, then download the full report as TXT, CSV, or JSON. Files of any size are handled, though multi-gigabyte uploads will take several seconds.

How to use

1. Upload one or more files by dragging or clicking the file picker.
2. Choose which hash algorithms to compute (MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, SHA3-512, BLAKE2b), or use Select all. Switch to Text mode to hash a typed string instead of a file.
3. Copy individual hashes or download a full report with all computed values.

When to use

• Verifying that a downloaded ISO or installer matches the SHA-256 published by the vendor.
• Detecting silent corruption after copying large archives between drives or cloud storage.
• Producing an integrity fingerprint to attach when sending evidence files to a legal or forensic team.

Result

Upload a software installer and compute its SHA-512 hash, then compare it against the publisher's posted hash to confirm authenticity.

FAQ

Which algorithm should I pick for verifying a download?

SHA-256 is the standard most publishers post and is more than secure enough for integrity checks. Pick SHA-512 only when the vendor specifically lists a SHA-512 digest, otherwise the values won't match.

Are MD5 and SHA-1 supported?

Yes — both are available so you can match older checksum files from legacy software and Linux distributions that still publish them. Just keep in mind MD5 and SHA-1 are broken for collision resistance, so pick SHA-256 or stronger whenever the hash is meant to prove security, not just detect accidental corruption.

Why are my SHA-256 results different each time I upload the same file?

They shouldn't be. A hash is fully deterministic on the byte content. If results differ, the file has actually changed — usually a re-export changed metadata, line endings, or a trailing newline. Check the file size first.

Will the tool work for a 4 GB virtual-machine image?

Yes. The hash is computed in streaming chunks so memory stays flat. Plan for roughly two seconds per gigabyte on a modern laptop, longer on a phone or older machine.

How do I prove the file matches the publisher's hash?

Paste the publisher's hex string into the Compare panel. The tool highlights any file whose digest matches and shows 'No match' otherwise — the comparison is case-insensitive.

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