> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

# [Build Apps](https://dev.wix.com/docs/api/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fbuild-apps&format=markdown.md)

## [Develop Your App](https://dev.wix.com/docs/build-apps/develop-your-app.md)


### [Develop an App with the CLI](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli.md)


#### [Supported Extensions](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions.md)


##### [Site](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/site.md)


###### [Custom Elements](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/site/custom-elements.md)


- [About Custom Element Installation with the CLI](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/site/custom-elements/about-custom-element-installation-with-the-cli.md)

- [Add a Custom Element Extension with the Wix CLI](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/site/custom-elements/add-a-custom-element-extension-with-the-wix-cli.md)

- [Custom Element Extension Files and Code](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/site/custom-elements/custom-element-extension-files-and-code.md)

- [Configure Custom Element Behavior](https://dev.wix.com/docs/build-apps/develop-your-app/develop-an-app-with-the-cli/supported-extensions/site/custom-elements/configure-custom-element-behavior.md)