What Is the Data Type for Image?


Heather Bennett

When working with images in HTML, it is important to understand the data type that should be used. The data type for images in HTML is the image data type, also known as img.

What is the img data type?

The img data type is a self-closing tag that allows you to embed an image into your HTML document. It is one of the most commonly used elements when it comes to displaying images on a webpage.

How to use the img tag?

To use the img tag, you need to provide two essential attributes: src and alt.

  • The src attribute specifies the source URL of the image you want to display. This can be a local file path or a URL pointing to an image hosted elsewhere.
  • The alt attribute provides alternative text for the image. This text will be displayed if the image fails to load or for accessibility purposes.

An example of using the img tag:

<img src="path/to/image.jpg" alt="Description of the image">

In this example, replace “path/to/image.jpg” with the actual file path or URL of your image and “Description of the image” with a brief description or caption.

Fallback content for non-supporting browsers

In some cases, older browsers may not support displaying images or may have images disabled. To provide fallback content, you can use the noscript tag within the img tag.

An example of using the noscript tag:

<img src="path/to/image.jpg" alt="Description of the image">
    <p>This page requires JavaScript to display the image.</p>

The content within the noscript tag will be displayed if JavaScript is disabled or not supported by the browser.

Additional attributes for the img tag

In addition to the required src and alt attributes, you can also use several optional attributes with the img tag:

  • width: Specifies the width of the image in pixels or as a percentage.
  • height: Specifies the height of the image in pixels or as a percentage.
  • title: Adds a tooltip or caption to be displayed when hovering over the image.
  • style: Allows you to apply CSS styles directly to the image.
  • class: Assigns a class name for styling or JavaScript manipulation.
  • id: Assigns an ID for more specific CSS Targeting or JavaScript manipulation.
  • loading: Specifies how the browser should load the image. Values can be “lazy”, “eager”, or “auto”.

Here is an example of using some of these attributes:

<img src="path/to/image.jpg" alt="Description of the image" width="300" height="200" title="Image Title" style="border: 1px solid black;" class="image-class" id="image-id">

In this example, the image will have a width of 300 pixels, a height of 200 pixels, a title displayed when hovering over it, a border style applied, and assigned classes and IDs for further styling or manipulation.


The img data type is essential for displaying images in HTML. By understanding its usage and attributes, you can effectively incorporate images into your webpages with ease.

Remember to always provide descriptive alternative text using the alt attribute for better accessibility and fallback content using the noscript tag for non-supporting browsers.

Now that you have a good understanding of the img data type, go ahead and start adding stunning images to your HTML documents!

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