MetaMask Extension — Getting Started with MetaMask

MetaMask is a browser-based wallet that lets you run Ethereum and EVM-compatible apps right in your browser. This guide walks you through installation, setup, connecting to dApps, and staying secure.

Install the MetaMask Extension

Official installation sources: metamask.io or your browser’s web store. Avoid third-party sites and links sent via email or social channels.

  • Chrome / Brave / Edge: visit the Chrome Web Store and add the MetaMask extension.
  • Firefox: install via Firefox Add-ons.
  • Confirm the publisher and ratings before installing.

Quick install script (informational):

When installed, pin the extension to your toolbar for easy access.

Create or Restore Your Wallet

Open the extension and choose Create a Wallet or Import Wallet.

  • Create: choose a secure password (device-only). MetaMask will generate a 12-word recovery phrase.
  • Import: enter your existing seed phrase to recover an old wallet.

Critical: Write your recovery phrase on paper and store it offline in a safe place. Never share it or enter it on websites.

Connect to dApps & Approve Transactions

MetaMask asks for permission before a dApp can view your public address or request transactions. Always:

  • Verify the dApp domain and contract interactions before approving.
  • Check the gas fee and details shown in the approval window.
  • Revoke permissions from Connected Sites in settings if you no longer use a dApp.

Security Best Practices

Protecting your funds is paramount. Follow these recommended practices:

  • Keep your recovery phrase offline (paper or metal backup). Do not store it digitally.
  • Use a hardware wallet (Ledger / Trezor) for large balances and connect via MetaMask for signing.
  • Enable phishing detection and keep your browser & OS updated.
  • Use a unique password and a secure password manager for non-seed credentials.

If your seed is compromised, immediately move funds to a new wallet and revoke approvals.

Troubleshooting & Tips

Common issues and fixes:

  • Extension not visible: Pin the extension or restart the browser.
  • Network issues: Switch networks from the MetaMask dropdown (Ethereum mainnet, testnets, or custom RPC).
  • Missing tokens: Add custom tokens by contract address.
  • Wallet not restoring: Ensure the recovery phrase words are correct and in order.

Final Notes & Disclaimer

MetaMask is a powerful gateway to decentralized finance and web3. Use it wisely, verify sources, and consider hardware wallets for larger holdings.

Disclaimer: This guide is informational only and not affiliated with or endorsed by MetaMask or ConsenSys. Always download MetaMask from the official site metamask.io and exercise caution when interacting with smart contracts. Crypto assets carry risk — do your own research.