SeedPGP Web App

Secure BIP39 mnemonic backup tool using PGP encryption

🔗 Live App: https://kccleoc.github.io/seedpgp-web-app/

About

This is a client-side web application for encrypting cryptocurrency seed phrases (BIP39 mnemonics) using OpenPGP encryption and Base45 encoding for QR code generation.

Features

🔐 PGP encryption with cv25519 (Curve25519)
📱 QR code-ready output (Base45 + CRC16)
✅ Supports 12/18/24-word BIP39 mnemonics
🔒 All encryption happens in your browser (client-side only)

Security Notice

⚠️ Your private keys and seed phrases never leave your browser

This is a static web app with no backend server
All cryptographic operations run locally in your browser
No data is transmitted to any server
Always verify you're on the correct URL before use

For Maximum Security

For production use with real funds:

Download and run locally
Or use a self-hosted version
Source code: https://github.com/kccleoc/seedpgp-web

How to Use

Encrypt: Enter your mnemonic + PGP public key → Get QR code
Decrypt: Scan QR code + provide private key → Recover mnemonic

Version

Current deployment: v1.1.0

Last updated: 2026-01-28

Built with TypeScript, React, Vite, and OpenPGP.js v6