Clear DefinitionsWeb Wallet
1 min read
Pronunciation
[web woll-it]
Analogy
A web wallet is like online banking—you access your funds through a website, but keys may be exposed to web‑based threats.
Definition
A browser‑based wallet accessible via a website interface, storing private keys in browser storage or via remote service.
Key Points Intro
Web wallets offer accessibility with trade‑offs:
Key Points
Browser storage: Keys in localStorage or sessionStorage.
Convenience: Accessible from any device with browser.
Custody options: Can be custodial or non‑custodial.
Integration: Often integrates with DApps directly.
Example
MyEtherWallet (MEW) allows users to interact with Ethereum by uploading keystore files or using hardware wallet integration in the browser.
Technical Deep Dive
Web wallets use JavaScript crypto libraries (ethers.js, web3.js) to derive keys and sign transactions client‑side. Some use MetaMask extension to inject provider. Custodial web wallets keep encrypted keys on server and decrypt in browser upon login.
Security Warning
Phishing sites can mimic web wallets; always verify domain and use bookmarks.
Caveat
Browser storage can be cleared or compromised; always backup seed phrase externally.
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