> For the complete documentation index, see [llms.txt](https://docs.echo3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.echo3d.com/javascript/installation.md).

# Installation

### Downloading the SDK <a href="#download-unity-sdk" id="download-unity-sdk"></a>

Clicking the <img src="/files/T1tOno8QjqqcjN2gEIC3" alt="" data-size="line"> button in the top header bar allows you to directly download the echo3D SDK for JavaScript.

<img src="/files/Ri3FQOFUFJh5TOKTEGbs" alt="" width="490">

Unzip the downloaded zip file and use the `Echo3DApi.js` file.