Open your browser: Launch your preferred web browser. Go to the MetaMask Wallet Extension website: Type " MetaMask " into your search engine or directly navigate to metamask.io. Learn how to install, use, and manage your MetaMask extension or app for Ethereum and ERC-20 tokens. Find answers to common questions about swaps, security, hardware MetaMask is a browser extension that lets you buy, store and send tokens, explore blockchain applications and manage your identities. It is trusted by over 1 million users [Below the Fold - ‘Read More’] MetaMask lets you create and manage your own identities (via private keys, local client wallet and hardware MetaMask Wallet Extension like Trezor™). When a Dapp wants to perform a transaction and write to the blockchain, you get a secure interface to review that transaction before approving or rejecting it.