Web feature layers may contain feature attachments. Attachments provide a flexible way to manage additional information that is related to features. Attachments allow you to add files to individual features and can be images, PDFs, text documents, or any other type of file. For example, if you have a feature representing a building, you can use attachments to add multiple photographs of the building taken from several angles, along with PDFs containing the building's deed and tax information. If a feature has attachments, you can access those attachments from the context menu of a record in the Attribute Table user interface, the Esri_FeatureLayer command, or the Attachment Viewer context menu option of a web feature layer in the Esri Contents pane, which all open the feature Attachments dialog box.
Attachments are similar to hyperlinks but allow you to associate multiple files to a feature, store the attached files in the geodatabase, and access the files in more ways.
New features must be synchronized before adding attachments.
When web feature layers are extracted as document feature layers using the extract tool, the linked attachment information is not included.
See also
For more information, see Attachments user interface.