---
title: "[Second level navigation] - Create Asset Sidebar Extensions"
description: Documentation for creating Asset Sidebar Extensions.
url: https://www.contentstack.com/docs/developers/create-asset-sidebar-extensions
product: Contentstack
doc_type: developer-guide
audience:
  - developers
version: unknown
last_updated: 2026-03-25
---

# [Second level navigation] - Create Asset Sidebar Extensions

This page introduces Asset Sidebar Extensions, explains what they are, and provides navigation links to related guides and resources. It is intended for developers who want to extend asset functionality and editorial experience, and should be used when exploring or implementing sidebar widgets for assets.

### Item 1

#### Listing page

##### Heading

Create Asset Sidebar Extensions

##### Introduction

**Note**: Experience Extensions use the legacy approach with extensions. We recommend using the [Asset Sidebar UI Location](/docs/developers/developer-hub/asset-sidebar-location/) for the Contentstack App Framework to extend the functionality of your apps.

Asset Sidebar Extensions let you create customized sidebar widgets that extend the functionality of your assets and enhance their editorial experience to suit your needs.

##### Links section

###### Get Started with Asset Sidebar Extensions

###### Heading

Get Started with Asset Sidebar Extensions

###### Links

###### About Asset Sidebar Extensions

###### Title

About Asset Sidebar Extensions

###### Url

/developers/developer-hub/asset-sidebar-location

###### Create a New Asset Sidebar Extension

###### Title

Create a New Asset Sidebar Extension

###### Url

/developers/developer-hub/asset-sidebar-location

###### Use Asset Sidebar Extensions

###### Title

Use Asset Sidebar Extensions

###### Url

/developers/developer-hub/asset-sidebar-location

###### Prebuilt Asset Sidebar Extension Guides

###### Heading

Prebuilt Asset Sidebar Extension Guides

###### Links

###### Image Preset Builder

###### Title

Image Preset Builder

###### Url

/developers/marketplace-apps/image-preset-builder

###### More about Asset Sidebar Extensions

###### Heading

More about Asset Sidebar Extensions

###### Links

###### Limitations of Asset Sidebar Extensions

###### Title

Limitations of Asset Sidebar Extensions

###### Url

/developers/developer-hub/asset-sidebar-location

###### Helpful Links for Asset Sidebar Extensions

###### Title

Helpful Links for Asset Sidebar Extensions

###### Url

/developers/developer-hub/asset-sidebar-location

## Common questions

**Q: Are Asset Sidebar Extensions the recommended approach for new development?**  
A: **Note**: Experience Extensions use the legacy approach with extensions. We recommend using the [Asset Sidebar UI Location](/docs/developers/developer-hub/asset-sidebar-location/) for the Contentstack App Framework to extend the functionality of your apps.

**Q: What do Asset Sidebar Extensions let you build?**  
A: Asset Sidebar Extensions let you create customized sidebar widgets that extend the functionality of your assets and enhance their editorial experience to suit your needs.

**Q: Where can I find guides and related resources?**  
A: Use the links in the “Get Started with Asset Sidebar Extensions,” “Prebuilt Asset Sidebar Extension Guides,” and “More about Asset Sidebar Extensions” sections, including “Image Preset Builder” and “Helpful Links for Asset Sidebar Extensions.”