MetaMask extension works as a web plug-in that converts our web browser into a safe and secure web
wallet which allows us to use the capabilities that are included on the platform. The extension for
MetaMask can easily be installed on five different web browsers namely Chrome, Brave, Edge, Firefox,
and Opera. After installing the extension on your device, you can set up a new wallet on the platform or
if you have already set up the wallet beforehand, you may surely import your existing wallet by using
the secret recovery phrase of the wallet.
http://sites.google.com/metmskio.com/metamaskextension/home