Public blockchains like Ethereum are the next evolution of Internet databases, and MetaMask is the next evolution of the browser.
MetaMask is a web browser extension and mobile app that allows you to manage your Ethereum private keys. By doing so, it serves as a wallet for Ether and other tokens, and allows you to interact with decentralized applications, or dApps. Unlike some wallets, MetaMask keeps no information on you: not your email address, not your password, and not your Secret Recovery Phrase or other private keys. You retain all power over your crypto-identity.
Click “Install MetaMask for Chrome”. You will be directed to the Chrome Web Store.
Click “Add to Chrome”.
On the pop up, click “Add extension”.
After adding MetaMask Extension, MetaMask will automatically open. You can also make sure it's easily accessible in your toolbar by clicking the jigsaw icon in the top-right of the screen, and hitting the pin icon.
In the new window that opens, click on "Add to Firefox"
On the pop up, click “Add”
NOTE: Don't be alarmed by the fact that the Firefox plugin is listed as being published by "danfinlay, kumavis" -- they're a couple of the main minds behind MetaMask!
After adding MetaMask Extension, you’ll return to your browser page. MetaMask will appear on your browser; click on it to open MetaMask.
Click on "Install MetaMask for Chrome". Ignore the alarm bells that are ringing: the reason it says "Chrome" here is because Brave is a Chromium-based browser and shares the Web Store with Chrome itself.
In the Chrome Store that opens, click 'Add to Brave'.
In the popup that appears, click 'Add extension'.
After adding MetaMask Extension, you’ll return to your browser page. MetaMask will appear on your browser. You may click on it to open MetaMask.
iOS
Open the App Store and hit the search button in the bottom right. Input MetaMask into the search bar.
Either click 'Get' or tap on the name of the app to see more details. Complete the usual App Store download confirmation process.
Once installed, open the app and follow the prompts to create your wallet.
Back up your Secret Recovery Phrase somewhere safe and offline!
Android
Open the Play Store and search for "MetaMask". The official MetaMask app looks like the screenshot below. Be VERY CAREFUL that you don't install a fake MetaMask app! Look for the ConsenSys name.
Tap 'Install' and wait for the process to finish.
Once installed, open the app and follow the prompts to create your wallet.
Back up your Secret Recovery Phrase somewhere safe and offline!
Alternatively, you could also access each browser's extension store and search for MetaMask. Whatever you prefer!
If you still have a hard time setting up your Metamask and you wish to understand more, please follow the guide below:
Note:
When adding MetaMask to your browser, you may ask why you’d have to approve an extension to “read and change all your data on the websites your visit”. Get ready, the answer is technical:
In order to enable dapps (decentralized applications) to access the blockchain, MetaMask needs to inject a Web3 JavaScript object into each page. By doing so, it will not change the website, but merely allows it to access the network.
If you are still not convinced, a good way to experiment and manage your browser is to sandbox your MetaMask: create a separate browser profile so that MetaMask is only installed there. This will let you get used to MetaMask and Web3 in an environment that's separate from your existing web identity.
That said, MetaMask is safe for browsing. Welcome -- you're joining over 30 million MetaMask users all over the world!
