To add content to a site's content library, you must be an Enterprise administrator, the site's owner, or a member of the site's core team.
You can add content to a site using its content library. Items added to the content library are automatically added to the content group which is a view access group. Items in this group can be used by core team members when designing the site's layout and are visible in searches to those with whom the item is shared (such as the public or the organization).
Note:
Content can only be edited by the item's owner (the person who originally created the item or uploaded it). To share an item with the core team so that team members can edit it, follow the steps in Give edit access.
Upload content using a URL
You can upload hosted .csv, .xls, .pdf, .png, and .jpeg format files, shapefiles, GEOJSON, feature services, and document links, using a URL.
Note:
Additional items, such as map and image services, must be uploaded to Enterprise directly. See Add existing content for instructions on how to add these items to a site's content library.
- Open the site in edit mode.
- Click the second drop-down menu on the edit navigation bar.
- Click Content Library.
- On the edit navigation bar, click New and click Content.
- On the Add Content page, paste a URL for a supported item type.
- Click Next.
Note:
Items that you upload using a URL are automatically shared to the content group. To share this item with your core team or another group, see Adjust sharing controls.Upload a file
Supported file types include .csv, .xls, .doc., .pdf, .png, and .jpeg format files. Maximum file size is 200 MB.
- Open the site in edit mode.
- Click the second drop-down menu on the edit navigation bar.
- Click Content Library.
- On the edit navigation bar, click New and click Content.
- On the Add Content page, click Upload.
- Click Browse for a file and upload a file.
- Provide metadata for the new item and click Save on the primary navigation bar.
Note:
Items that you upload using a file are automatically shared to the content group. To share this item with your core team or another group, see Adjust sharing controls.Add existing items
You can add content that others, including members of your organizations and the public, have created.
Note:
Consider talking with the item's owner before sharing it with a larger audience. Also consider that unless the item is yours or shared with your core team, or you have administrative privileges, you cannot change the sharing settings of an item. This means that private items (items shared only with you, the core team, or the organization) that are shared to the content library are not visible to people with whom the item is not shared.
- Open the site in edit mode.
- Click the second drop-down menu on the edit navigation bar.
- Click Content Library.
- Click the Add Existing Content button.
- Filter the list of existing content and click to select the individual items that you want to add.
- Click Add.
The item is not shared to the content group, but is available in your site's search.
Use the Groups Manager option
You an also add groups of items that are relevant to a site, such as department-specific content or content groups from other sites. To add a group to a site, the group must be either owned by you or shared with the organization.
- Open the site in edit mode.
- Click the second drop-down menu on the edit navigation bar.
- Click Groups Manager.
- Click Add Groups on the side of the page.
- Select groups and click Add.
To remove a group, click Remove next to the group.
Add or modify metadata
You can modify the metadata in ArcGIS Enterprise for certain items. Items can also be edited in ArcGIS Enterprise.
- Open the site in edit mode.
- Click the second drop-down menu and click Content Library.
- Click the title of a dataset to open it in edit mode.
- Add a thumbnail, tags and categories, a summary, a and description to complete the form.
- Click Save.
To edit metadata in ArcGIS Enterprise, click the more button 
, and click Edit in ArcGIS Enterprise. See Metadata for more information.
Remove content
Remove items shared to a site's content library.
Note:
Pages created for a site cannot be removed from the content library and are always available in a site's search results.
- Open a site in edit mode.
- Click the second drop-down menu and click Content Library.
- Click the checkbox next to an item.
- Click Remove.
If the item was shared to the site's content group, it is unshared from the group in Enterprise.