
Welcome to MetaMask’s Developer Documentation. MetaMask is the trailblazing tool enabling user interactions and experience on Web3. It is currently available as a browser extension and as a mobile app on both Android and iOS devices. The purpose of this documentation is to illustrate how to build a dapp with MetaMask.

- You can find the latest version of MetaMask on our [official website](https://metamask.io/).
- For help using MetaMask, visit our [User Support Site](https://metamask.zendesk.com/).
- For up to the minute news, follow our [Twitter](https://twitter.com/MetaMask) or [Medium](https://medium.com/metamask) pages.
- To learn how to contribute to the MetaMask project itself, visit our [Internal Docs](https://github.com/MetaMask/metamask-extension/tree/develop/docs).

<Tip title="Recent Breaking Provider Changes">
If you are an Ethereum application developer and are looking for information about our January 2021 provider API changes,
please see our [Migration Guide](./provider-migration.html) for more details.
</Tip>

## Why MetaMask

MetaMask was created to meet the needs of secure and usable Ethereum-based web sites. In particular, it handles account management and connecting the user to the blockchain.

- [Get started here](./getting-started.md)
- [Learn more about our JavaScript Provider API](./ethereum-provider.md)
- [Learn more about our RPC API](./rpc-api.md)
