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RLP Codec

v1.0.0

Encode and decode Ethereum RLP (Recursive Length Prefix) data

Encodes JSON hex-string structures into Ethereum's RLP (Recursive Length Prefix) binary format and decodes RLP hex back to readable JSON — all client-side.

How to use
  • →Toggle between Encode and Decode mode using the switcher above the panels.
  • →Paste a JSON value of hex strings or nested arrays on the left to encode, or an RLP hex string on the right to decode.
  • →RLP only supports byte strings and nested lists — represent integers as hex byte strings (e.g. "0x04").
  • →Empty string "0x" encodes to 0x80, and an empty list encodes to 0xc0.