TxBooks Tools
Free Bitcoin dev tools
A growing collection of open, no-install utilities for Bitcoin developers and self-custody users. Paste your data, get answers. Your keys never leave your browser on the tools that derive them.
Built and maintained by TxBooks.
Tools
xpub Explorer
See every address derived from an xpub, ypub, or zpub — balances included.
BOLT11 Decoder
Decode a Lightning invoice to amount, timestamp, and routing hints.
PSBT Decoder
Inspect and validate a Partially Signed Bitcoin Transaction.
BIP32 Path Explainer
Understand what m/84'/0'/0'/0/5 actually means.
Lightning Address Validator
Verify a Lightning address (e.g. alice@getalby.com) resolves correctly.
BOLT12 Offer Decoder
Decode a Lightning offer (BOLT12) — the new payment primitive.
Script Decoder
Break a Bitcoin script into opcodes, with human-readable explanations.
Mempool Fee Forecaster
See current fee rates across five priority tiers with a sats + USD cost estimator.
Base58 / Bech32 Codec
Encode and decode Bitcoin address formats side-by-side.
Taproot Descriptor Visualizer
Render a Taproot output descriptor as a tree of spending paths.
LND Rebalance Calculator
Estimate the cost of rebalancing Lightning channels.
Signet Faucet
Working signet faucet links, address validator, and signet primer.
More on the way
New tools ship every few weeks. Got an idea or a tool you wish existed? Email us at support@txbooks.app.