Phantom is a browser extension wallet designed to give users secure, streamlined access to Web3 — handling tokens, NFTs, and dApp connections across multiple blockchains. This presentation summarizes how the Phantom extension delivers convenience without sacrificing security, walks through setup and daily use, and lists best practices for protecting funds and privacy.
Phantom acts as an in-browser wallet and provider for websites to request signatures and transactions, letting users interact with DeFi, NFT marketplaces, and Web3 games without exposing private keys.
Phantom supports multiple chains (Solana, Ethereum, Polygon and more) while keeping the UI focused and simple — token balances, transaction history, and NFT galleries are visible at a glance.
Users can swap tokens inside the extension, add custom tokens, and view their NFT collections with a lightweight gallery interface.
Private keys are encrypted locally in the extension. Seed phrases are shown only on initial wallet creation and must be stored securely offline. Phantom never transmits seed phrases to remote servers.
Browser extensions can be targeted by malicious actors or spoofed by fraudulent copies. Best practices include: only install the official extension from trusted stores or phantom.com, check publisher details, limit permissions, keep extensions updated, and use hardware wallets for large balances.
Pick your browser's official store (Chrome/Edge/Firefox) or download via the official site and follow the extension install flow. After install, create a new wallet or restore via seed phrase.
Phantom allows multiple accounts. Label accounts, move small amounts for frequent interactions, and reserve main funds in hardware-protected accounts when possible.
Carefully verify the amount, recipient, and dApp domain when approving transactions. Avoid approving arbitrary "infinite" token allowances unless you trust the dApp.
Phantom provides SDKs and a connect URI flow for websites and mobile apps. Developers should use the official SDK, support request/response pairing, and prevent UI spoofing by clearly showing origin and intent for each transaction request.
Click any link to open an official resource. Swatches indicate unique colors assigned to each link for quick visual scanning.
Phantom delivers a modern browser-wallet experience balancing ease-of-use with strong local security models. For everyday Web3 activity it's an excellent tool — but users should combine Phantom with good security hygiene: prefer hardware wallets for large holdings, verify extension sources, and limit dApp approvals.
Use the official docs and support channels listed above for up-to-date guides, SDK references, and security updates.