MetaMask Chrome Extension: Your Browser-Based Web3 Wallet

The MetaMask Chrome Extension transforms your Chrome browser into a secure gateway to Ethereum and other EVM-compatible blockchains. By injecting a window.ethereum object into web pages, it enables decentralized applications (dApps) to interact directly with your wallet—no backend login servers required.

🛠️ Installation & Setup

1. Visit the Official Source Go to metamask.io and click “Download”, then choose Chrome.
2. Add to Chrome You’ll be redirected to the Chrome Web Store; click “Add to Chrome” and confirm.
3. Create or Import Wallet
   • New Wallet: Click “Get Started” → “Create a Wallet”, set a strong password, and record your 12‑word Secret Recovery Phrase offline.
   • Existing Wallet: Click “Import Wallet”, enter your recovery phrase, and set a local password.
4. Lock & Unlock MetaMask auto‑locks when you close the browser. You can also manually lock via the account menu for extra safety.

🔑 Key Features

• Account Management: Create multiple Ethereum accounts, rename or remove them, and export public addresses.
• Custom Networks: Easily add networks like Binance Smart Chain, Polygon, Avalanche, or private testnets by entering RPC endpoints.
• Token & NFT Support: View and interact with ERC‑20 tokens and ERC‑721/ERC‑1155 NFTs. Import custom tokens via contract address.
• Swaps: Built‑in aggregator sources liquidity across DEXs, letting you swap tokens directly in your wallet with competitive rates.
• Secure Signing: All transaction and message signing is initiated by dApps but must be explicitly approved in the MetaMask popup—your private keys never leave your browser.

🌐 dApp Connectivity

When a site offers a “Connect Wallet” button, MetaMask will prompt you to select which account(s) to share. After connecting, the dApp can read your public address and request transaction signatures, which you must approve manually.

🔒 Security Best Practices

• Never share your Secret Recovery Phrase with anyone or enter it on a website.
• Use a strong, unique password for the extension lock.
• Verify URLs before authorizing connections—phishing sites may mimic dApp interfaces.
• Keep MetaMask updated via the Chrome Web Store to receive the latest security patches.

With the MetaMask Chrome Extension, you hold the keys to Web3 right in your browser—enabling seamless, secure interaction with decentralized finance, NFT platforms, gaming dApps, and beyond