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HTML | alt attribute
  • Last Updated : 30 Sep, 2019

The HTML alt attribute is used to provides an alternate tag that is used to show or display something if the primary attribute i.e., the <img> tag, fails to display the value assigned to it.

Supported tags:

Example: Img alt attribute.

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<!DOCTYPE html> 
<html
  
<head
    <title
        HTML img alt Attribute 
    </title
</head
  
<body
    <h1>GeeksforGeeks</h1
  
    <h2>HTML img alt Attribute</h2
  
    <img src
        alt="GeeksforGeeks logo"
  
</body
  
</html

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Output:
Before:

After:

Example: Area alt attribute.



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<!DOCTYPE html> 
<html
  
<head
    <title
        HTML area alt Attribute 
    </title
</head
  
<body style="text-align:center;"
    <img src
        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
        alt="Triangle"
          
        <area shape="circle" coords="155, 56, 26" href
        alt="Circle"
          
        <area shape="rect" coords="224, 30, 276, 82" href
        alt="Square"
    </map
</body
  
</html>

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Output:

Example: Input alt attribute.

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<!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
        alt="Submit"
        width="48"
        height="48"
</body
  
</html>

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Output:

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

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

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