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▲ Open In App HTML alt attribute Last Updated : 27 Aug, 2024 Summarize Comments Improve Suggest changes Like Article Like Save Share Report Follow

The alt attribute in HTML provides alternative text for images, aiding accessibility and providing context for screen readers.

Syntax:

<img src=" " alt=" " >

Supported tags:

Name

Description

area

<area>’s alt provides alternative text for image map areas.

image

<img> alt offers alternative text for image accessibility.

input

specify the alternative text for an image when the image attribute is not displayed.

<applet>

used to specify the alternate text for an applet element.

Attribute Values:

value

Description

text

is used to specify the alternative text for the supported element if the image is not displaying.

Example: In This example we includes an image with the alt attribute providing alternative text (“GeeksforGeeks logo”) for accessibility.

HTML <!DOCTYPE html> <html> <head> <title> HTML img alt Attribute </title> </head> <body> <h1>GeeksforGeeks</h1> <h2>HTML img alt Attribute</h2> <img src= "https://media.geeksforgeeks.org/wp-content/uploads/20190506164011/logo3.png" alt="GeeksforGeeks logo"> </body> </html>

Output:

html-image-alt-attribute

HTML image alt attribute

Example 2: In this example we are using an image with an image map created using <area> tags. Each <area> tag includes an alt attribute for accessibility, providing alternative text for the clickable areas.

HTML <!DOCTYPE html> <html> <head> <title> HTML area alt Attribute </title> </head> <body style="text-align:center;"> <img src= "https://media.geeksforgeeks.org/wp-content/uploads/20190227165729/area11.png" alt="alt_attribute" width="300" height="119" class="aligncenter" usemap="#shapemap" /> <map name="shapemap"> <!-- area tag contained image. --> <area shape="poly" coords="59, 31, 28, 83, 91, 83" href= "https://media.geeksforgeeks.org/wp-content/uploads/20190227165802/area2.png" alt="Triangle"> <area shape="circle" coords="155, 56, 26" href= "https://media.geeksforgeeks.org/wp-content/uploads/20190227165934/area3.png" alt="Circle"> <area shape="rect" coords="224, 30, 276, 82" href= "https://media.geeksforgeeks.org/wp-content/uploads/20190227170021/area4.png" alt="Square"> </map> </body> </html>

Output:

alt2.gif

HTML area alt attribute

Example 3: In this example we are showing an input field of type image with the alt attribute providing alternative text (“Submit”) for accessibility.

HTML <!DOCTYPE html> <html> <head> <title> HTML Input alt Attribute </title> </head> <body style="text-align:center;"> <h1 style="color:green;"> GeeksForGeeks </h1> <h2>HTML Input alt Attribute</h2> <input id="myImage" type="image" src= "https://media.geeksforgeeks.org/wp-content/uploads/gfg-40.png" alt="Submit" width="48" height="48"> </body> </html>

Output:

HTML-alt-attribute

HTML alt attribute example

Supported Browsers

The browsers supported by HTML | alt attribute are listed below:

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Apple Safari
  • Opera

HTML alt attribute – FAQs

Is the alt attribute required for images?

Yes, the alt attribute is required for all <img> tags in HTML5. Even if you have a decorative image that does not require descriptive text, it is recommended to use an empty alt=”” attribute.

What should I include in the alt attribute?

The alt attribute should provide a brief and accurate description of the image’s content or purpose. For example, “A person using a laptop” would be appropriate for an image showing that scenario.

What happens if the alt attribute is missing from an image?

If the alt attribute is missing, screen readers will either ignore the image or read the file name, which is usually not helpful. Additionally, if the image fails to load, users won’t see any descriptive text.

Should I use the alt attribute for decorative images?

For purely decorative images that do not add information to the content, it is best to use an empty alt=”” attribute. This signals screen readers to skip the image.

Can I use the alt attribute with other HTML elements besides <img>?

No, the alt attribute is specifically designed for the <img> tag. Other elements, like <input type=”image”>, use the alt attribute differently.

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