Convert an image into grayscale image using HTML/CSS

Last Updated : 07 Dec, 2018

Given a colored image and the task is to convert the image into grayscale image using CSS property. In CSS, filter property is used to convert an image into grayscale image. Filter property is mainly used to set the visual effect of an image.

Syntax:

filter: grayscale()

Example 1: In this example, use filter: grayscale(100%) to convert an image into grayscale.

<!DOCTYPE html> 
<html> 
    <head> 
        <title>Convert into grayscale image</title> 
        <style> 
            img { 
                -webkit-filter: grayscale(100%); 
                filter: grayscale(100%); 
            } 
            h1 { 
                color:green; 
            } 
        </style> 
    </head> 
    <body> 
        <center> 
        <h1>GeeksforGeeks</h1> 
        <h2>Grayscale Image</h2> 
        <img src= 
"https://media.geeksforgeeks.org/wp-content/uploads/interview-preparation-2.png" 
        width="500px" height="250px" alt="filter applied" />   
        </center> 
    </body> 
</html> 

Output:
grayscale image

Example 2:

<!DOCTYPE html> 
<html> 
    <head> 
        <title>Convert into grayscale image</title> 
        <style> 
            img { 
                -webkit-filter: grayscale(1); 
                filter: grayscale(1); 
            } 
            img:hover { 
              -webkit-filter: grayscale(0); 
              filter: none; 
            } 
            h1 { 
                color:green; 
            } 
        </style> 
    </head> 
    <body> 
        <center> 
        <h1>GeeksforGeeks</h1> 
        <h2>Grayscale Image</h2> 
        <img src= 
"https://media.geeksforgeeks.org/wp-content/uploads/interview-preparation-2.png" 
        width="500px" height="250px" alt="filter applied" />   
        </center> 
    </body> 
</html> 

Output:
grayscale image

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