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Z85 Encoder / Decoder

Convert binary data between hexadecimal and ZeroMQ’s string-safe Z85 format.

Spaces and line breaks are allowed. The byte count must be a multiple of four; no padding is added.

Choose Encode to Z85 to convert the specification’s sample bytes.

Z85 uses ZeroMQ RFC 32’s 85-character alphabet, big-endian 32-bit words and exact 4-byte ↔ 5-character groups. Decoding is strict: whitespace, partial groups and values above 2³²−1 are rejected. Z85 is an encoding, not encryption. All processing stays in your browser.