Image element

Example:

Fields

Field	Type	Description	Required?
type	String	The type of element. In this case type is always image.	Required
alt_text	String	A plain-text summary of the image. This should not contain any markup.	Required
image_url	String	The URL for a publicly hosted image. You must provide either an image_url or slack_file. Maximum length for this field is 3000 characters.	Optional
slack_file	Object	A Slack image file object that defines the source of the image.	Optional

Usage info

Use the image block if you want a block with only an image in it.

Example

{
  "type": "image",
  "image_url": "http://placekitten.com/700/500",
  "alt_text": "Multiple cute kittens"
}

An image block using slack_file with a url:

{
  "type": "image",
  "slack_file": {
    "url": "https://files.slack.com/files-pri/T0123456-F0123456/xyz.png"
  },
  "alt_text": "Slack file object."
}

An image block using slack_file with a id:

{
  "type": "image",
  "slack_file": {
    "id": "F0123456",
  },
  "alt_text": "Slack file object."
}