> 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)


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


#### [Backend Extensions](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions.md)


##### [Schema Plugins](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins.md)


- [About Schema Plugin Extensions](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/about-schema-plugin-extensions.md)

- [The JSON Schema](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/the-json-schema.md)

- [Extend an Existing Object](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/extend-an-existing-object.md)

- [Extend an Existing Object Array Field](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/extend-an-existing-object-array-field.md)

- [Extend an Existing Object with a Site-Specific Field](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/extend-an-existing-object-with-a-site-specific-field.md)

- [Display Schema Plugin Fields in Wix Business Solutions](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/display-schema-plugin-fields-in-wix-business-solutions.md)

- [Schema Plugin FAQ](https://dev.wix.com/docs/build-apps/develop-your-app/extensions/backend-extensions/schema-plugins/schema-plugin-faq.md)