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Web3 Tools

6 free web3 tools. Browser-based. No signup. Privacy-first.

Free No signup Client-side Privacy friendly

What are Web3 Tools?

Zerethon's web3 suite includes 6 browser-based utilities designed for everyday web3 workflows. Every tool runs entirely client-side — your input never reaches our servers.

Why client-side?

  • Privacy: sensitive data (API keys, payloads, passwords) never leaves your device.
  • Speed: no network round-trip — results appear as you type.
  • Reliability: works offline once loaded.
  • Cost: always free, no signup or rate limits.

Browse Web3 Tools

NFT Metadata Validator

Validate NFT metadata against ERC-721, OpenSea, and Solana Metaplex standards. Preview your NFT before minting.

Open tool

Wallet Address Validator

Validate Ethereum, Bitcoin (legacy + SegWit), Solana, TRON and Litecoin addresses. Format + checksum, no RPC.

Open tool

ETH Unit Converter

Convert between Wei, Gwei, Ether, Szabo, Finney and more. BigInt-safe — no rounding errors.

Open tool

EIP-55 Checksum Tool

Convert any Ethereum address to its canonical EIP-55 checksummed form. Detect typos before sending funds.

Open tool

Keccak-256 Hash Generator

Compute Keccak-256 digest (Ethereum's hash) of text or files. Different from SHA-3 — matches Solidity keccak256().

Open tool

Base58 Encoder & Decoder

Encode and decode Base58 and Base58Check. Supports text or hex input, used by Bitcoin, Solana, and IPFS.

Open tool

Frequently asked questions

Are these Web3 tools free?

Yes. All 6 tools are free with no signup, no rate limits, and no ads outside footer placements.

Do these tools work offline?

Yes. Once a tool page loads, the tool itself runs in your browser without needing a network connection.

Do you log my inputs?

No. Tools run entirely client-side. Your input never leaves your browser unless a tool explicitly says it makes an API call (e.g. Open Graph Preview, which fetches a URL through our server proxy).

Can I use these tools commercially?

Yes. Outputs you generate are yours. The tools themselves are operated by Zerethon — please respect rate limits on server-backed tools.

Where can I request a new Web3 tool?

Tweet us or open a GitHub issue. The most-requested tools enter our roadmap quarterly.

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