The invert() function is an inbuilt function that is used to apply a filter to the image to set the invert of the color of the sample image.
Syntax:
invert( amount )
Parameters: This function accepts single parameter amount which holds the amount of conversion. The value of invert is set in terms of value and percentage. The value 0% represents original image and 100% represents the inverted image. The invert() function internally uses the following formula, to computer the inverse of the image:
amount * (255 - value) + (1 - amount) * value
The value of inversion is controlled by the variable amount, the variable value lies between 0 – 1(floating) range (this is done by converting the passed percentage of color inversion to a value between 0-1). The value is the color value of the pixel. (255-value) gives the color after subtracting the color value with the max pixel value, assumes that the value of the pixel is in the range 0 – 255 (though input image sample space could be stretched/scaled to meet the specified criteria). Below is a table containing a list of inversion percentages and the result they produce.
| Inversion |
Result |
| 0% |
Original Image |
| 50% |
Image with each pixel having grey color |
| 100% |
Completely inverted Image |
Below example illustrates CSS invert() function in CSS:
Example:
html
<!DOCTYPE html>
<html>
<head>
<title>CSS invert() Function</title>
<style>
h1 {
color:green;
}
body {
text-align:center;
}
.invert_effect {
filter: invert(100%);
}
</style>
</head>
<body>
<h1>GeeksforGeeks</h1>
<h2>CSS invert() function</h2>
<img class="invert_effect" src=
alt="GeeksforGeeks logo">
</body>
</html>
|
Output:
Supported Browsers: The browsers supported by invert() function are listed below:
- Google Chrome 18 and above
- Edge 12 and above
- Internet Explorer not supported
- Firefox 35 and above
- Safari 6 and above
- Opera 15 and above
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Last Updated :
07 Jun, 2023
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