MetaMask

Ethereum Browser Extension
What is MetaMask?
MetaMask is an innovative Firefox add-on serving as a fully functioning Ethereum wallet in your browser. This extension plays a crucial role in accessing Ethereum enabled distributed applications, or 'Dapps'. It injects the Ethereum web3 API into every website's javascript context to allow dApps to retrieve information from blockchain. It also allows users to create and manage their own Ethereum identities, facilitate transactions and interact securely with dApps.
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Add-on stats

By: danfinlay
Version: 12.0.6 (Last updated: 2024-08-29)
Creation date: 2016-08-17
Weekly download count: 8,643
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • storage
  • unlimitedStorage
  • clipboardWrite
  • http://localhost:8545/
  • https://*.infura.io/
  • https://*.codefi.network/
  • https://*.cx.metamask.io/
  • https://chainid.network/chains.json
  • https://lattice.gridplus.io/*
  • activeTab
    • See more
Size: 22.13M

Ranking

# 42
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Other platforms

MetaMask (v12.6.2)
2.96 (4,467) 16,000,000
MetaMask (v11.16.14)
3.50 (245) 3,325,317
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Add-on summary

Analyze keywords

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

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User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
    Cons
    • Unstable performance and frequent crashes.
    • Issues with installation and loading.
    • Frequent transaction failures compared to other wallets.
    • Difficulties in withdrawing funds.
    Most mentioned
    • Difficulty using the wallet and connectivity issues.
    • Frequent need to uninstall and reinstall the application.
    • Concerns over potential loss of assets.
    Recent reviews
    by Paco, 2024-11-20
    Falta muito pra ser uma carteira principal, mas, geral aceita porqueira fazer o que.
    by Vitor F. C. Oliveira, 2024-11-17
    by LyynnFactory, 2024-11-17
    View all 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 likelihood

    MetaMask has earned a fairly good reputation and likely can be trusted.

    Upgrade to see risk analysis details