# Using cargo-web

Cargo web is a cargo subcommand for building client web apps. It makes building and deploying web applications incredibly easy. It is also the only toolchain that supports Emscripten targets. Read more [here](https://github.com/koute/cargo-web).

**Install**

```bash
cargo install cargo-web
```

### Build

```bash
cargo web build
```

### Run

```bash
cargo web start
```

### Supported Targets

* `wasm32-unknown-unknown`
* `wasm32-unknown-emscripten`
* `asmjs-unknown-emscripten`

{% hint style="info" %}
For `*-emscripten` targets, you'll need to install the Emscripten SDK
{% endhint %}