Web
12 tools · all client-side
- cURL to Code ConverterConvert cURL command lines into JavaScript fetch, Node.js Axios, or Python requests code.
- Ethereum CREATE2 Deterministic Address CalculatorCalculate deterministic smart contract deployment addresses using EIP-1014 CREATE2 with deployer, salt, and initCode or code hash.
- EVM Bytecode Disassembler & Opcode ReferenceDisassemble raw EVM runtime or creation bytecode into assembly instruction streams with PC offsets, gas costs, and stack diffs.
- IPv4 Subnet & CIDR CalculatorCalculate IPv4 subnet masks, CIDR network ranges, usable host ranges, broadcast addresses, and wildcard masks.
- MAC Address Lookup & FormatterFormat MAC addresses, inspect OUI vendor details, and determine unicast/multicast and global/local scope.
- Merkle Tree & Proof Generator for Airdrops and WhitelistsGenerate standard OpenZeppelin-compatible Merkle Trees, root hashes, and per-leaf cryptographic inclusion proofs from address lists or data values.
- Ethereum RLP (Recursive Length Prefix) Encoder & DecoderEncode arbitrary JSON nested arrays/strings into Ethereum RLP hex bytes, and decode raw RLP byte streams into structured JSON and hierarchical trees.
- Solidity 4-Byte Function Selector Lookup & Keccak-256 CalculatorCalculate 4-byte function selectors from canonical signatures and reverse-lookup raw selectors against built-in ERC standard databases.
- Solana Address & PDA InspectorInspect Solana public keys, check Ed25519 curve membership (wallet vs PDA), decode hex/byte representation, and derive Program Derived Addresses (PDA) & ATAs.
- Solidity ABI & Signature InspectorParse Solidity contract ABI JSON into human-readable interface signatures, event topics, and error definitions.
- Solidity Calldata & EVM Raw Word DissectorDissect EVM transaction calldata into 4-byte method selectors and 32-byte (256-bit) ABI words with address, uint256, and boolean conversions.
- URL Parser & Query InspectorDeconstruct URLs into protocol, host, port, path, hash, and detailed query parameter tables.