MetaMask Chrome Extension — Getting Started

What is MetaMask?

MetaMask is a browser extension wallet that brings Ethereum and EVM-compatible chains to your Chrome browser. It allows you to manage accounts, store tokens and NFTs, and connect securely to decentralized applications (dApps).

1 • Install MetaMask for Chrome

1. Open Chrome and visit the official website: metamask.io.
2. Click Download and choose Chrome. You will be taken to the Chrome Web Store listing.
3. Click Add to Chrome then confirm Add extension. The MetaMask fox icon will appear in the toolbar.

Tip: Only install MetaMask from metamask.io or the official Chrome Web Store page. Avoid third-party links and clones.

2 • Create or Import a Wallet

1. Click the MetaMask icon in your toolbar and choose Get Started.
2. Select Create a Wallet (new) or Import wallet (if you already have a seed phrase).
3. Create a strong password for this extension (local encryption for your device).
4. Write down the 12-word Secret Recovery Phrase and store it offline in a secure place — never screenshot or copy it to cloud storage.
5. Confirm the phrase when prompted to finish setup.

3 • Add Networks & Tokens

MetaMask shows Ethereum Mainnet by default. To use other networks (e.g., Polygon, BSC, Avalanche) or custom tokens:

• Add a network: Click network dropdown → Add network and enter RPC details from a trusted source.
• Add tokens: Assets → Add token → search or paste the token contract address (verify on a block explorer).

4 • Connecting to dApps

1. Open the dApp (marketplace, game or DeFi app) and click Connect Wallet.
2. Select MetaMask. Review the connection request carefully and approve only if you trust the site.
3. Disconnect websites you no longer use from Settings → Connected sites.

Safety Tips — Protect Your Crypto

• Never share your Secret Recovery Phrase. Keep physical backups (paper/steel) offline.
• Use a hardware wallet (Ledger/Trezor) for significant balances and connect it via MetaMask.
• Use a dedicated browser profile for MetaMask and minimize other extensions to reduce risk.
• Verify contracts and URLs before approving transactions; check on Etherscan or the project's official site.
• Revoke approvals periodically using tools like revoke.cash.
• Keep software updated: Chrome, MetaMask, and your OS should be current.

Troubleshooting

• Extension not opening: Restart Chrome and ensure MetaMask is enabled at chrome://extensions.
• Missing tokens: Add the token contract manually under Assets → Add Token.
• Network mismatch: Check you’re on the correct network (Mainnet vs testnet).
• Suspicious activity: Remove suspicious extensions, run a malware scan, and move funds to a fresh wallet (with new seed) if necessary.

FAQ

Q: Can MetaMask recover my wallet without the seed phrase?

A: No — the Secret Recovery Phrase is required to restore accounts. Back it up safely.

Q: Is MetaMask custodial?

A: No — MetaMask is non-custodial. You control your private keys (seed phrase).

Q: How do I make MetaMask safer?

A: Use hardware wallets for high-value assets, disable unnecessary extensions, and follow the tips above.

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