#️⃣ SHA-256 Hash

How it works

SHA‑256 is a cryptographic hash function that deterministically maps any input to a 256‑bit digest. It is collision‑resistant for practical purposes and widely used for integrity checks and signatures.

• We convert your text to bytes with UTF‑8, then call crypto.subtle.digest('SHA-256', bytes).
• The resulting 32‑byte buffer is rendered here as a lowercase hexadecimal string (two hex characters per byte).
• Hashes are one‑way: you cannot recover the original text from the digest.

Security note: SHA‑256 alone is not a password hash; use a key‑stretching KDF (e.g., scrypt, Argon2, PBKDF2) for storing passwords.

Data is never sent to a server.

Text input only; large inputs may be slow.

• Compute a checksum for a snippet.