Ethereum Message Signer

Sign a plain-text Ethereum message locally in your browser.

Paste an Ethereum private key and enter the message you want to sign. The signature is created client-side without sending the key to a backend.

{{ status.label }}

{{ status.message }}

{{ status.label }}{{ address || 'Address will appear after signing' }}

Signer address

{{ address || 'Signer address will appear here.' }}

Signature

{{ signature || 'Signature will appear here.' }}

Common uses

Use this page to prepare off-chain signatures, verify wallet ownership workflows, or test signed-message flows during development.

Security note

This tool runs locally, but private keys are still highly sensitive. Use it only in a trusted environment and never with funds you cannot risk.