The image component is used to display images.


Below are two examples of the schema required to define an Image.

    "type": "Image",
    "options": {
        "image_url": ""
    "type": "Image",
    "options": {
        "base64": "poiu49ht3...",
        "caption": "Lorem ipsum dolor sit amet"


Key Description
image_url The URL of the image. Only JPG, PNG, GIF and WebP supported. (Optional if base64 is specified.)
base64 Optional. Base64 encoded string of the image.
base64_extension Optional. The extension of the base64 encoded image data. Defaults to png. Allowed values include jpeg and png.
width Optional. The width of the component, when inside a Section or Row component with their columns option set to null.
caption Optional. Caption to add below the image.

When using the image_url key, ensure the image you are linking to has a size of less than 2 MB.


By default, the images will be scaled proportionally to fit within the confines of the region of the report they are added to. This means there may be white space around the image, as it attempts to maintain the aspect ratio.


The width key supports defining the width using a fraction specified as a string e.g. 1/3. The values for the denominator supported are 2, 3, 4, 5, 6 and 12, whilst the numerator can be any value up to the value of the denominator.

If the width key is set to null, then the component will attempt to fill all the available horizontal space.

Providing the image data

Images can be provided in one of two ways, either via providing an external web-accessible URL, or by base64 encoding the image. Providing an external URL is the preferred way, as this greatly reduces the size of the JSON payload being POSTed to the API. Please note, you should only specify either the image_url key or the base64 key.

As a hosted image

The recommended way to provide a URL for your image is to host it on a cloud storage solution such as Amazon S3 / Google Cloud Storage buckets / Azure Blob Storage. The supported image formats are:

  • JPG
  • PNG
  • BMP
  • GIF

As a base 64 encoded image

If hosting your image is not an option, you can base 64 encode the image and provide the string in the base64 key. Please ensure the base 64 encoded string is using the UTF-8 character set.

Missing something?

Hybiscus is continuously improving and adding new features. If you think we are missing a critical feature, please do not hesitate to contact us and offer your feedback at