CSS filter property
cssfilter attribute
1. Introduction
filter attribute is used to process https://coder-cafe.com/wp-content/uploads/2025/09/images and add visual effects to elements. The cssfilter attribute is a special extension of the filter attribute. It is a private attribute of the WebKit kernel and is used to filter https://coder-cafe.com/wp-content/uploads/2025/09/images in web page elements. This article will detail the use of the cssfilter attribute and common filter effects.
2. Usage
cssfilter attributes can be used in selectors or inline styles to specify filter effects. Its syntax is as follows:
-webkit-filter: filter-function1() filter-function2() ...;
filter-function1, filter-function2, etc. are filter functions used to specify different filter effects.
3. Common Filter Effects
3.1. Color Matrix Filter
The color matrix filter can change the color of an image by adjusting its color components. Commonly used color matrix filter functions include:
grayscale(): Converts an image to grayscale;sepia(): Converts an image to sepia;saturate(): Adjusts the saturation of an image;hue-rotate(): Adjusts the hue of an image;invert(): Inverts an image;opacity(): Sets the transparency of an image;brightness(): Adjusts the brightness of an image;contrast(): Adjusts the contrast of an image.
Sample code:
<!DOCTYPE html>
<html>
<head>
<style>
.img-filter {
width: 300px;
filter: grayscale(100%) sepia(100%) saturate(200%) hue-rotate(180deg) invert(100%) opacity(50%) brightness(150%) contrast(200%);
}
</style>
</head>
<body>
<img src="example.jpg" alt="Example Image" class="img-filter">
</body>
</html>
In the example code above, the filter attribute of the image element applies multiple color matrix filter functions to convert the original image to grayscale and sepia, while also enhancing the image’s saturation, hue, brightness, and contrast, ultimately achieving the filter effect.
3.2. Blur Filters
Blur filters can make an image appear blurred by changing the value of each pixel. Common blur filter functions include:
blur(): Applies a Gaussian blur effect to an image.
Sample code:
<!DOCTYPE html>
<html>
<head>
<style>
.img-filter {
width: 300px;
filter: blur(5px);
}
</style>
</head>
<body>
<img src="example.jpg" alt="Example Image" class="img-filter">
</body>
</html>
In the example code above, the image element’s filter attribute applies the blur filter function blur(), adding a 5-pixel Gaussian blur to the original image.
3.3. Drop Shadow Filter
The drop shadow filter creates a drop shadow effect by changing the value of each pixel in an image. Common drop shadow filter functions include:
drop-shadow(): Adds a drop shadow effect to an image.
Sample code:
<!DOCTYPE html>
<html>
<head>
<style>
.img-filter {
width: 300px;
filter: drop-shadow(10px 10px 5px #888888);
}
</style>
</head>
<body>
<img src="example.jpg" alt="Example Image" class="img-filter">
</body>
</html>
In the above code example, the filter attribute of the image element applies the drop-shadow() function, adding a shadow effect to the original image with a horizontal offset of 10 pixels, a vertical offset of 10 pixels, a blur radius of 5 pixels, and a shadow color of #888888.
4. Browser Compatibility
The cssfilter attribute is a private attribute of the WebKit kernel and is therefore only applicable to WebKit-based browsers such as Chrome and Safari.
5. Summary
The cssfilter attribute is an extension of the filter attribute and is used to filter https://coder-cafe.com/wp-content/uploads/2025/09/images within web page elements. This article introduces the usage of the cssfilter property and common filter effects, including color matrix filters, blur filters, and drop shadow filters. By properly applying filter effects, you can enhance the visual quality of web pages and provide users with a better browsing experience. It’s important to note that the cssfilter property only works with WebKit-based browsers, so compatibility testing and adjustments are required.