Encoders / Decoders

Binary, hex, base64, base32, base58, URL, ASCII, and Unicode escapes.

Base32

Base58

Base85 (Ascii85)

Base91

Output

Hash + HMAC + PBKDF2

Cryptographic hashing, HMAC authentication, and key derivation.

HMAC Key

PBKDF2 Key Derivation

Password

Salt

Iterations

Key Length (bytes)

Result

Cipher

Key / Shift / Rails

Second value (Affine b)

Result

Passphrase

Result

Frequency analysis, brute force, and cipher detection. Paste ciphertext to analyze.

Index of Coincidence

Run analysis to see IC

Your key

Browser token

Ready.

Result

Encode text or images directly into audio spectrograms. When viewed in a spectrogram, the audio reveals the hidden image or text.

Text to encode in spectrogram

Image Width (pixels)

Image Height (pixels)

Min Frequency (Hz)

Max Frequency (Hz)

Duration per column (seconds)

Image source

Ready.

quiet mid hot loud

Import WAV files to view them in the spectrogram. Images/text encoded into spectrograms will be visible when viewed here.

Import WAV for spectrogram viewing

Info