All cryptographic operations run locally in your browser. No private keys or sensitive data are ever sent to any server.
✓All signing happens client-side only
✓No telemetry or analytics
!Verify URL before entering real keys
!For max security, use offline (air-gapped)
₿
Bitcoin Toolkit
Description
A fully local, open-source Bitcoin toolset. Generate keys, build transactions, explore mnemonics, and scan addresses — all cryptographic operations run entirely in your browser. No keys are ever transmitted to any server.
About
Built with audited, zero-dependency cryptography libraries by Paul Miller: @noble/curves (secp256k1), @noble/hashes (SHA256, RIPEMD160), @scure/base (Base58, Bech32), @scure/bip39, and @scure/bip32. No backend, no analytics, no tracking.
Support
If this tool is useful to you, consider donating to support development:
1BtcBoSSnqe8mFJCUEyCNmo3EcF8Yzhpnc
Load Wallet
Enter any private key format. Balance and transactions will be fetched from the network. Your key never leaves this browser.