Hash Toolkit · Tunable outputs
BLAKE2 File Hash Checker
Hash binaries, archives, or backups with BLAKE2b for 64-byte outputs or choose BLAKE2s for compact digests. Adjust length, set a MAC key, and verify checksums instantly. Need text hashing? Jump to the BLAKE2 text tool →
File BLAKE2 Hash
Stream files through BLAKE2b or BLAKE2s right in the browser. Dial in digest length or add a MAC key whenever you need authenticated hashing.
1–64 bytes (128 hex chars max).
Keys longer than 64 bytes are rejected. Leave blank for standard hashing.
Upload a file
Click to browse or drag & drop files here
Select a file and enter a target hash to validate.
BLAKE2 for files
BLAKE2b delivers fast 64-byte checksums ideal for distribution pipelines, while BLAKE2s targets constrained environments with a smaller digest. Configure either mode without shipping your files anywhere.
CipherTools streams data through the hashing engine and never uploads content. Refresh or close the page to clear keys and file handles from memory.