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Generate BLAKE3 hashes from text or uploaded files with configurable output length and optional keyed hashing.
Runs in your browser — your input is processed on this device and never uploaded.
Secondary information and sharing actions for this public tool.
Generate a BLAKE3 hash for each text value or uploaded file. The default output is 32 bytes, and the configurable extendable output can be from 1 through 1,048,576 bytes. Results include raw digest bytes and lowercase hexadecimal text.
Leave the key empty for ordinary hashing. Keyed hashing requires a secret key of exactly 32 bytes; any other non-empty key length is rejected.
BLAKE3 is a modern cryptographic hash with extendable output, so it can produce more than the default 32 bytes without switching algorithms. The same input, key, and output length always produce the same result.
Hashing is one-way, not encryption. Keyed mode can authenticate data only while the key remains secret. Plain or keyed BLAKE3 is not a password-hashing function.
Drag a file here, or click to upload.
Up to 5 files · 60 MB total
Upload is optional.
Drag a file here, or click to upload.
Max size 60 MB
Upload is optional.