Non-Custodial Crypto Browser Extension Wallet

Our client needed a white-label browser wallet that could rival MetaMask in performance, while offering a cleaner UI and deeper dApp compatibility for their ecosystem of Web3 products. We developed a cross-browser, non-custodial extension wallet built for Chrome, Firefox, and Brave. Completed in 12 weeks across 5 core modules, the extension delivers full EVM and multi-chain support with a permission-based dApp connection model, hardware wallet signing, and a built-in token and NFT management suite. The framework isolates signing operations in a secure background service worker, ensuring private keys never touch the web page context.

Technology Stack

• Chrome Extension Manifest V3
• React + Vite
• TypeScript
• Ethers.js / Viem
• EIP-1193 Provider API
• WalletConnect v2
• LedgerHQ SDK
• IndexedDB (Encrypted Keystore)
• 1inch / 0x Swap API
• ENS Resolution
• Node.js + Express
• AWS CloudFront