Educational, offline-first BIP-39 seed phrase generator that runs entirely in your browser.
Learn how Bitcoin seed phrases actually work. Generates BIP-39-style mnemonics in your browser — no server round-trips, no network calls once loaded — so you can explore entropy, checksums, word counts, and wallet recovery safely.
⚠️ For learning only. Do not use generated phrases to store real funds.
- ⚡ 100% client-side — nothing is ever sent to a server
- 🔌 Works offline — load once, then disconnect
- 🔢 Configurable word counts (12 / 15 / 18 / 21 / 24)
- 🧠 Educational — visualizes entropy & checksums behind valid phrases
- 🛡️ Security guidance — trusted-wallet recommendations + pro-tips
- 📚 Built-in FAQ
Or grab a fully offline standalone copy: bitcoin-seed-phrase-generator.html
