Key Specifications
| Feature | Details |
|---|---|
| Platforms | Browser extension (Chrome, Firefox, Edge, Brave) & Mobile (iOS, Android) |
| Networks | Ethereum mainnet, popular L2s (Arbitrum, Optimism, Base), and EVM chains (BNB Chain, Polygon, Avalanche, etc.) via custom RPC |
| Key Management | 12/24-word BIP39 seed phrase (software); optional hardware wallet pairing (Ledger, Trezor, etc.) |
| Built-in Features | Swaps, bridging (selected networks), buy crypto, NFT gallery, Portfolio view, WalletConnect |
| Security | Non-custodial; on-device encryption; phishing warnings; permissions/approvals control |
| Fees | Free to use; network gas fees apply; service fees for in-app swaps/buys |
| Open Source | Client is open-source/partly source-available; active developer ecosystem |
| Best For | DeFi power users, NFT collectors, and anyone interacting with EVM dApps |
Design & User Experience
The extension-first design makes MetaMask feel “native” to Web3: connect, sign, and go. Network selection is straightforward, with popular chains and L2s available in a couple of clicks.
The mobile app mirrors the desktop UX and supports WalletConnect for cross-dApp usage. The Portfolio dashboard consolidates tokens and NFTs across supported networks for quick oversight.
Security Features
- Non-Custodial Keys: You control your seed phrase; MetaMask cannot access or recover it.
- Hardware Wallet Support: Pair with Ledger/Trezor for on-device signing and improved key security.
- Permission Controls: Review and revoke token approvals; granular control reduces exposure to malicious dApps.
- Phishing & Scam Warnings: Domain and signature prompts help users spot suspicious requests.
- Encrypted Local Storage: Wallet secrets are encrypted on your device; biometric locks supported on mobile.
Supported Cryptocurrencies
MetaMask natively supports ETH and ERC-20/ERC-721/ERC-1155 assets. Any EVM-compatible network can be added via RPC, enabling tokens on BNB Chain, Polygon, Avalanche C-Chain, Fantom, Base, Arbitrum, Optimism, and more. Non-EVM chains generally require bridges or separate wallets.
Customer Feedback
“Still the smoothest way to hop between DeFi protocols. Pairing a hardware wallet gives me the best of both worlds—convenience and security.”
“Approvals management and signature warnings saved me more than once. Learn them early.”
Strengths and Weaknesses at a Glance
Advantages:
- ✅ Ubiquitous support across DeFi/NFT dApps
- ✅ Easy multichain EVM setup; add networks via RPC
- ✅ Built-in swaps, bridging, NFT view, and Portfolio
- ✅ Hardware wallet pairing for safer signing
- ✅ Large ecosystem, extensions, and dev tooling
Disadvantages:
- ❌ Browser-extension attack surface (phishing, malicious sites)
- ❌ Seed phrase management is user’s responsibility; no built-in recovery
- ❌ Service fees on in-app swaps/buys
- ❌ Non-EVM chains require bridges or different wallets
Setup Tutorial
- Install MetaMask from the official browser extension store or mobile app store.
- Create a new wallet, set a strong password, and securely write down your seed phrase offline.
- Add popular networks (e.g., Arbitrum, Optimism, Base, Polygon) from the “Add network” menu or verified sources.
- Connect to dApps and carefully review approvals and signatures before confirming.
- Optionally pair a hardware wallet (Ledger/Trezor) for on-device transaction signing.
Global Crypto Wallet Leaderboard
See where MetaMask ranks in our live comparisons: