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ArcGIS Developer

Attachment Infos (Feature Service)


The attachmentInfos resource returns information about attachments associated with a feature. This resource is available only if the layer has advertised that it has attachments. A layer has attachments if its hasAttachments property is true.

Each attachment info includes information about the attachment such as its ID, content type, size, and name.

The attachmentInfos resource has the following one child resource:

  • Attachment—Streams the content of an individual attachment.

Request parameters


The geodatabase version to query. This parameter applies only if the isDataVersioned property of the layer is true. If this is not specified, the query will apply to the published map’s version.

Syntax: gdbVersion=<version>

Example: gdbVersion=SDE.DEFAULT


This option was added at 10.5 and works with ArcGIS Server services only. The historic moment to query. This parameter applies only if the supportsQueryWithHistoricMoment property of the layer being queried is set to true. This setting is provided in the layer resource. If historicMoment is not specified, the query will apply to the current feature and its attachments.


historicMoment=<Epoch time in milliseconds>



If true, metadata stored in the exifInfo column will be returned for attachments that have exifInfo. This option is only supported when "name": "exifInfo" in the layer's attachmentProperties includes "isEnabled": true. When set to false, or not set, null is returned for exifInfo. The default is false.

Values: true | false


The response format. The default response format is html.

Values: html | json | pjson

Example usage

JSON response syntax

  "attachmentInfos": [
      "id": <attachmentId1>,
      "contentType": "<contentType1>",
      "size": <size1>,
      "name": "<name1>"
      "id": <attachmentId2>,
      "contentType": "<contentType2>",
      "size": <size2>,
      "name": "<name2>"

JSON response example

  "attachmentInfos": [
      "id": 3,
      "contentType": "video/quicktime",
      "size": 397540,
      "name": "360 degree view"
      "id": 2,
      "contentType": "application/pdf",
      "size": 270133,
      "name": "Sales Deed"
      "id": 1,
      "contentType": "image/jpg",
      "size": 45325,
      "name": "Picture of the house"