Wallets
MetaMask
A widely-used browser extension and mobile wallet that enables users to interact with Ethereum DApps and manage their digital assets.
Last Updated
2026-03-29
Related Concepts
What is MetaMask?
MetaMask is a browser extension and mobile wallet that lets users manage Ethereum assets and connect to DApps. Private keys are stored locally the DApp never sees them.
How does MetaMask work?
- User installs the extension and generates a wallet with a seed phrase.
- When visiting a DApp, MetaMask requests permission to share the public address.
- Every transaction triggers a popup for the user to review and approve.
- MetaMask signs the transaction locally and broadcasts it to the network.
Why does MetaMask matter?
It made DeFi and NFT marketplaces accessible to millions by turning complex blockchain interactions into simple browser popups. Being a hot wallet, it should not store large holdings.
Key features of MetaMask
- Browser extension and mobile app
- Supports Ethereum, Polygon, Arbitrum, and more
- Private keys stored locally
- Simple DApp connection via permission model
Examples of MetaMask
A user connects MetaMask to Uniswap to swap tokens. A collector signs into OpenSea and buys an NFT.
A developer uses MetaMask to test smart contracts on a local testnet.