How to generate a BLAKE2b-512 hash

1. Enter your text

   Paste or type any plain text into the Text field — up to 200,000 characters. This is the string that will be hashed using the BLAKE2b-512 algorithm.

2. Choose hex case

   Select lower case (a–f, the default) or UPPER CASE (A–F) for the hexadecimal output. Both are valid — choose based on what your downstream system expects.

3. Run and copy the hash

   Press Run. The BLAKE2b-512 hash is computed server-side and returned as a hexadecimal string. Click Copy to grab it. BLAKE2b-512 is faster than MD5 on modern hardware while being cryptographically secure. It is widely used in password managers, file verification, and blockchain systems.

4. Verify or compare

   To verify a file's integrity, hash it as text and compare the output to the published checksum. To check two strings are equal without revealing the originals, hash both and compare the digests — identical digests mean identical inputs.