How to add filter to the background image using CSS ?

Last Updated : 15 Oct, 2020

The purpose of this article is to learn how to add filters to an image using CSS. The CSS filter property is used to set the visual effect of an element. This property is mostly used in image content.

Syntax:

filter: none | blur() | brightness() | contrast() | drop-shadow() | grayscale() | hue-rotate() | invert() | opacity() | saturate() | sepia() | url();

Example:

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        body { 
            background-image: url( 
"https://media.geeksforgeeks.org/wp-content/uploads/rk.png"); 
            filter: brightness(90%); 
            filter: grayscale(70%); 
        } 
    </style> 
</head> 
  
<body> 
    <center> 
        <h2> 
            GeeksForGeeks 
        </h2> 
        <h2> 
            How to add a filter to a  
            background image using CSS? 
        </h2> 
    </center> 
</body> 
  
</html>     

Output:

Example 2:

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        .darkened-image { 
            filter: brightness(50%); 
            background-image: url( 
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20191121162913/s11.png"); 
            height: 94px; 
            width: 120px; 
        } 
    </style> 
</head> 
  
<body> 
    <h1 style="color: green"> 
        GeeksForGeeks 
    </h1> 
    <p> 
        The image below is the 
        normal image 
    </p> 
  
    <img src= 
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20191121162913/s11.png"> 
  
    <p> 
        The image below is the 
        darkened image: 
    </p> 
  
    <div class="darkened-image"></div> 
</body> 
  
</html>                     