Encode Solidity Fields into ETH ABI Hex Format

When Dapps interact with smart contracts on the Ethereum blockchain via Web3 RPC calls, the function names, parameters, and return values are encoded as hex values according to the ABI specification. If you look at the Web3 transactions, or look at the blockchain data itself, it may not be very human readable. This online tool provides a quick way to decode and encode that binary data.