item

An item, also known as a content item, is a resource stored in a portalArcGIS portal, also known as a portal, is a website with applications and tools that can be used to create, manage, access, and share geospatial content and data. It supports security and authentication, developer credentials, content and data service management, user and group management, and site administration. A portal can be hosted in Esri's infrastructure or your own infrastructure.Learn more such as web mapA web map is a map stored as a JSON object that defines properties such as the basemap layer, data layers, layer styles, and pop-up styles. Its JSON structure is defined by the web map specification.Learn more, layerA layer is a reference to a collection of geographic data that is used to access and display data. The data for layers are typically provided by the basemap layer service and data services.Learn more, styleA style is the visual definition of how geographic data is displayed in a map including colors, backgrounds, outlines, labels, and other visual elements. Each style emphasizes a specific type of cartographic theme and data.Learn more, script tool, file, or notebook. An item is used to manage the properties (metadata) and settings of a resource, and they are accessible both through an item pageAn item page is a web page in ArcGIS Online or the developer dashboard used to access and manage the properties for an item and the content it references such as a web map, hosted layer, or file.Learn more and ArcGIS APIs. Properties such as name, owner, title, description, created (date), tags, and sharing settings can be set through the item page. To access an item, you can reference it by its URL or unique item IDAn item ID is a unique identifier representing a single item stored, managed, and accessed in a portal, such as a web map, hosted layer, or file.Learn more.

An item is created when:

• A file is added to a portal.
• A URL to a resource is referenced.
• A result is produced from the completion of an analysis tool.
• Using the Map ViewerMap Viewer is a browser-based mapping tool that can view, create, and save web maps. It can also perform mapping, visualization, and spatial analysis operations.Learn more and interactive tools.

Sharing

Configuring the sharing level of an item will ensure the security of the item and its underlying data. The following is a list of the sharing levels available for the different types of ArcGIS products:

Supported types

A portal supports many different types of content as items. Here are some common supported file types:

• Shapefiles (.shp)
• GeoJSON (.geojson)
• CSV (comma-separated values)
• KML (Keyhole Markup Language)
• Raster images (.jpeg, .png, etc.)

To learn more about different supported item types, go to What can you add to ArcGIS Online?.

Search

You can discover items using the search capabilities in a portal. You can use the:

• Integrated search option in Map Viewer to find items that include web maps, layers, and more.
• Content page in a portal to search using keywords and filter the returned results.
• Portal serviceA portal service provides the functionality to securely create, access, and manage content, data services, users, and groups in a portal. The service can be hosted by Esri or in ArcGIS Enterprise.Learn more to programmatically search and filter items based on your needs.