About this extension

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
NFTs
erc20
tokens
ICOs
erc271
...and more!

Rate your experience

Report this add-on for abuse

If you think this add-on violates Mozilla's add-on policies or has security or privacy issues, please report these issues to Mozilla using this form.

Please don't use this form to report bugs or request add-on features; this report will be sent to Mozilla and not to the add-on developer.

Release notes for 8.1.2

- [#9608](https://github.com/MetaMask/metamask-extension/pull/9608): Ensure QR code scanner works
- [#9624](https://github.com/MetaMask/metamask-extension/pull/9624): Help users avoid insufficient gas prices in swaps
- [#9614](https://github.com/MetaMask/metamask-extension/pull/9614): Update swaps network fee tooltip
- [#9623](https://github.com/MetaMask/metamask-extension/pull/9623): Prevent reducing the gas limit for swaps
- [#9630](https://github.com/MetaMask/metamask-extension/pull/9630): Fix UI crash when trying to render estimated time remaining of non-submitted transaction
- [#9633](https://github.com/MetaMask/metamask-extension/pull/9633): Update View Quote page to better represent the MetaMask fee

Used by

Report this add-on for abuse