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Bitcoin tools that run in your browser

Every tool here does its work on your own machine. Nothing you paste is uploaded, logged or stored, and none of them ask for a private key or a seed phrase.

Address Inspector

base58 / bech32

Address type, network, checksum and the decoded bytes behind any Bitcoin address.

Transaction Decoder

raw hex

Inputs, outputs, amounts, script types and witness data from raw transaction hex.

What we will not build

Some tools are popular and we still leave them out on purpose:

  • Key or paper wallet generators. A wallet made inside a web page is one bad script away from being emptied. Use an offline wallet or a hardware device instead.
  • Brainwallet generators. Keys derived from a passphrase have been drained for years. That is an attack tool, not a utility.
  • Bulk balance scanners. Checking many addresses that are not yours is not a use we want to serve.

Tools by other people

Good work worth knowing about, for jobs we do not cover: