EthernautaEthernauta
A minimal Ethereum wallet extension. Create a wallet, keep your keys encrypted on your device, and sign transactions — nothing ever leaves your browser.
Try it here
Install the extension, then use the buttons below to connect your wallet and send a test transfer on Sepolia.
How it works
Create your wallet
Generate a mnemonic phrase and protect it with a password. Stored encrypted on your device.
Unlock with password
Enter your password to unlock the vault and access your Ethereum address and balance.
Connect to a site
Click Connect wallet on any supported site to link your Ethernauta wallet.
Review and sign
See exactly what you're signing — method, params, address — then confirm with one click.
See it in action
Fully local
Your keys never leave your browser. No servers, no cloud.
AES-GCM encrypted
Your mnemonic is encrypted with a key derived from your password via PBKDF2.
Sign only what you see
Every transaction shows you the method and params before you confirm.