
MetaMask: The Essential Ethereum Browser Extension
Add-on stats
- storage
- unlimitedStorage
- clipboardWrite
- http://*/*
- https://*/*
- activeTab
- webRequest
- webRequestBlocking
- *://*.eth/
- notifications
Ranking
Other platforms
Add-on summary
An Ethereum Wallet in your Browser MetaMask is an extension for accessing Ethereum enabled distributed applications, or "Dapps" in your browser!
Watch an introductory video here.
The extension injects the Ethereum web3 API into every website's javascript context, so that dapps can read from the blockchain.
MetaMask also lets the user create and manage their own identities (via private keys, local client wallet and hardware wallets like Trezor™), so when a Dapp wants to perform a transaction and write to the blockchain, the user gets a secure interface to review the transaction, before approving or rejecting it.
Because it adds functionality to the normal browser context, MetaMask requires the permission to read and write to any webpage. You can always "view the source" of MetaMask the way you do any Chrome extension, or view the source code on Github: https://github.com/MetaMask/metamask-plugin
Enables access to: Web 3.0 Dapps
See moreUser reviews
- User-friendly interface for wallet management
- Good for storing Ethereum-based tokens
- Generally easy to add networks
- Frequent issues with network connections
- Requires constant reinstallation for proper functionality
- High gas fees and lack of coin auto-conversion
- Connection issues when adding networks
- Reinstallation required frequently
- High transaction fees
User reviews
Add-on safety
Risk impact
MetaMask requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
MetaMask has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
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